FEAT: added support to lexer for get-word and lit-word literals.

Red [
	Title:   "Red runtime lexer"
	Author:  "Nenad Rakocevic"
	File: 	 %lexer.red
	Tabs:	 4
	Rights:  "Copyright (C) 2014 Nenad Rakocevic. All rights reserved."
	License: {
		Distributed under the Boost Software License, Version 1.0.
		See https://github.com/dockimbel/Red/blob/master/BSL-License.txt
	}
]

trans-integer: routine [
	start [string!]
	end	  [string!]
	/local
		c	 [integer!]
		n	 [integer!]
		m	 [integer!]
		len  [integer!]
		p	 [byte-ptr!]
		neg? [logic!]
][
	str:  GET_BUFFER(start)
	unit: GET_UNIT(str)
	p:	  string/rs-head start
	len:  end/head - start/head
	neg?: no

	c: string/get-char p unit
	if any [
		c = as-integer #"+"
		c = as-integer #"-"
	][
		neg?: c = as-integer #"-"
		p: p + unit
		len: len - 1
	]
	n: 0
	until [
		c: string/get-char p unit

		m: n * 10
		if m < n [SET_RETURN(none-value) exit]			;-- return NONE on overflow
		n: m

		m: n + c - #"0"
		if m < n [SET_RETURN(none-value) exit]			;-- return NONE on overflow
		n: m

		p: p + unit
		len: len - 1
		zero? len
	]
	integer/box either neg? [0 - n][n]
]

trans-word: routine [
	stack [block!]
	src   [string!]
	type  [datatype!]
	/local
		value [red-value!]
][
	value: as red-value! word/push-in (symbol/make-alt src) stack
	set-type value type/value
]

trans-pop: function [stack [block!]][
	value: last stack
	remove back tail stack
	append/only last stack value
]

transcode: func [
	src		[string!]
	dst		[block! none!]
	return: [block!]
	/local
		cs stack pos s e value line count? wrong-delimiters comment-rule
		digit hexa hexa-char not-word-char not-word-1st
		not-file-char not-str-char not-mstr-char caret-char
		non-printable-char integer-end block-rule literal-value
		any-value escaped-char char-rule line-string nested-curly-braces
		multiline-string string-rule cnt trans-string new base c ws
][
	cs:		[- - - - - - - - - - - - - -]				;-- memoized bitsets
	stack:	clear []
	count?:	yes											;-- if TRUE, lines counter is enabled
	line: 	1

	append/only stack any [dst make block! 4]

	trans-string: [
		new: make string! (index? e) - index? s
		parse/case copy/part s e [						;@@ add /part option to parse!
			any [
				escaped-char (append new value)
				| set c skip (append new c)
			]
		]
		new
	]

	if cs/1 = '- [
		cs/1:  charset "0123465798"						;-- digit
		cs/2:  union cs/1 charset "ABCDEF"				;-- hexa
		cs/3:  union cs/2 charset "abcdef"				;-- hexa-char
		cs/4:  charset {/\^^,[](){}"#%$@:;}				;-- not-word-char
		cs/5:  union union cs/4 cs/1 charset {'}		;-- not-word-1st
		cs/6:  charset {[](){}"%@:;}					;-- not-file-char
		cs/7:  #"^""									;-- not-str-char
		cs/8:  #"}"										;-- not-mstr-char
		cs/9:  charset [#"^(40)" - #"^(5F)"]			;-- caret-char
		cs/10: charset [#"^(00)" - #"^(1F)"]			;-- non-printable-char
		cs/11: charset {^{"[]);}						;-- integer-end
		cs/12: charset " ^-^M"							;-- ws-ASCII, ASCII common whitespaces
		cs/13: charset [#"^(80)" - #"^(8A)"]			;-- ws-U+2k, Unicode spaces in the U+2000-U+200A range
		cs/14: charset [#"^(00)" - #"^(1F)"] 			;-- ASCII control characters

	]
	set [
		digit hexa hexa-char not-word-char not-word-1st
		not-file-char not-str-char not-mstr-char caret-char
		non-printable-char integer-end ws-ASCII ws-U+2k control-char
	] cs

	;-- Whitespaces list from: http://en.wikipedia.org/wiki/Whitespace_character
	ws: [
		pos: #"^/" (
			if count? [
				line: line + 1
				;append/only lines to block! stack/tail?
			]
		)
		| ws-ASCII										;-- only the common whitespaces are matched
		| #"^(0085)"									;-- U+0085 (Newline)
		| #"^(00A0)"									;-- U+00A0 (No-break space)
		| #"^(1680)"									;-- U+1680 (Ogham space mark)
		| #"^(180E)"									;-- U+180E (Mongolian vowel separator)
		| ws-U+2k										;-- U+2000-U+200A range
		| #"^(2028)"									;-- U+2028 (Line separator)
		| #"^(2029)"									;-- U+2029 (Paragraph separator)
		| #"^(202F)"									;-- U+202F (Narrow no-break space)
		| #"^(205F)"									;-- U+205F (Medium mathematical space)
		| #"^(3000)"									;-- U+3000 (Ideographic space)
	]

	newline-char: [
		#"^/"
		| #"^(0085)"									;-- U+0085 (Newline)
		| #"^(2028)"									;-- U+2028 (Line separator)
		| #"^(2029)"									;-- U+2029 (Paragraph separator)
	]

	counted-newline: [pos: #"^/" (line: line + 1)]

	ws-no-count: [(count?: no) ws (count?: yes)]

	escaped-char: [
		"^^(" [
			[										;-- special case first
				"null" 	 (value: #"^(00)")
				| "back" (value: #"^(08)")
				| "tab"  (value: #"^(09)")
				| "line" (value: #"^(0A)")
				| "page" (value: #"^(0C)")
				| "esc"  (value: #"^(1B)")
				| "del"	 (value: #"^(7F)")
			]
			| s: [2 6 hexa-char] e: (				;-- Unicode values allowed up to 10FFFFh
				value: encode-UTF8-char s e
			)
		] #")"
		| #"^^" [
			[
				#"/" 	(value: #"^/")
				| #"-"	(value: #"^-")
				| #"?" 	(value: #"^(del)")			;@@FIXME
				| #"^^" (value: #"^^")				;-- caret escaping case
				| #"{"	(value: #"{")
				| #"}"	(value: #"}")
				| #"^""	(value: #"^"")
			]
			| s: caret-char (value: s/1 - 64)
		]
	]

	char-rule: [
		{#"} s: [
			 escaped-char
			| ahead [non-printable-char | not-str-char] break
			| skip (value: s/1)
		] {"}
	]

	line-string: [
		{"} s: any [
			{^^"} e:
			| ahead [#"^"" | newline-char] break
			| skip e:
		]
		e: {"}
	]

	nested-curly-braces: [
		(cnt: 1)
		any [
			counted-newline
			| "^^{" | "^^}"
			| #"{" (cnt: cnt + 1)
			| e: #"}" if (zero? cnt: cnt - 1) fail
			| skip
		]
		#"}"
	]

	multiline-string: [#"{" s: nested-curly-braces]

	string-rule: [line-string | multiline-string]

	symbol-rule: [
		some [ahead [not-word-char | ws-no-count | control-char] break | skip] e:
	]

	begin-symbol-rule: [								;-- 1st char in symbols is restricted
		[not ahead [not-word-1st | ws-no-count | control-char]]
		symbol-rule
	]

	path-rule: [
		ahead slash (									;-- path detection barrier
			stack/push path!
			stack/push to type copy/part s e			;-- push 1st path element
		)
		some [
			slash
			s: [
				integer-number-rule
				| begin-symbol-rule			(type: word!)
				| paren-rule 				(type: paren!)
				| #":" s: begin-symbol-rule	(type: get-word!)
				;@@ add more datatypes here
			] (
				stack/push either type = paren! [		;-- append path element
					value
				][
					to type copy/part s e
				]
				type: path!
			)
			opt [#":" (type: set-path!)]
		]
		(value: stack/pop type)
	]

	word-rule: 	[
		s: begin-symbol-rule [
			path-rule 									;-- path matched
			| (type: word!)
			  opt [#":" (type: set-word!)]
			  (trans-word last stack copy/part s e type) ;-- word or set-word matched
		]
	]

	get-word-rule: [
		#":" (type: get-word!) s: begin-symbol-rule [
			path-rule (
				value/1: to get-word! value/1			;-- workaround missing get-path! in R2
			)
			| (trans-word last stack copy/part s e type) ;-- get-word matched
		]
	]

	lit-word-rule: [
		#"'" (type: lit-word!) s: begin-symbol-rule [
			path-rule (type: lit-path!)					;-- path matched
			| (trans-word last stack copy/part s e type) ;-- lit-word matched
		]
	]

	issue-rule: [#"#" (type: issue!) s: symbol-rule]

	refinement-rule: [slash (type: refinement!) s: symbol-rule]

	slash-rule: [s: [slash opt slash] e:]

	hexa-rule: [2 8 hexa e: #"h" (type: integer!)]

	integer-number-rule: [
		opt [#"-" | #"+"] digit any [digit | #"'" digit] e:
	]

	integer-rule: [
		integer-number-rule
		ahead [integer-end | ws-no-count | end]
	]

	block-rule: [
		#"[" (append/only stack make block! 4)
		any-value
		#"]" (trans-pop stack)
	]

	paren-rule: [
		#"(" (append/only stack make paren! 4)
		any-value
		#")" (trans-pop stack)
	]

	comment-rule: [#";" [to lf | to end]]

	wrong-delimiters: [
		pos: [
			  #"]" (value: #"[") | #")" (value: #"(")
			| #"[" (value: #"]") | #"(" (value: #")")
		] :pos
		(print ["missing matching" value])
	]

	literal-value: [
		pos: (e: none) s: [
			comment-rule
			;| multiline-comment-rule
			;| escaped-rule    (stack/push value)
			| integer-rule		(append last stack trans-integer s e)
			;| hexa-rule		  (stack/push decode-hexa	 copy/part s e)
			| word-rule
			| lit-word-rule
			| get-word-rule
			;| refinement-rule (stack/push to refinement! copy/part s e)
			;| slash-rule	  (stack/push to word! 	   	 copy/part s e)
			;| issue-rule	  (stack/push to issue!	   	 copy/part s e)
			;| file-rule		  (stack/push load-file		 copy/part s e)
			| char-rule			(append last stack value)
			| block-rule
			| paren-rule
			| string-rule		(append last stack do trans-string)
			;| binary-rule	  (stack/push load-binary s e)
		]
	]

	any-value: [pos: any [literal-value | ws]]

	parse/case src [any-value opt wrong-delimiters]
	stack/1
]

Red [
	Title:   "Red runtime lexer"
	Author:  "Nenad Rakocevic"
	File: 	 %lexer.red
	Tabs:	 4
	Rights:  "Copyright (C) 2014 Nenad Rakocevic. All rights reserved."
	License: {
		Distributed under the Boost Software License, Version 1.0.
		See https://github.com/dockimbel/Red/blob/master/BSL-License.txt
	}
]

trans-integer: routine [
	start [string!]
	end	  [string!]
	/local
		c	 [integer!]
		n	 [integer!]
		m	 [integer!]
		len  [integer!]
		p	 [byte-ptr!]
		neg? [logic!]
][
	str:  GET_BUFFER(start)
	unit: GET_UNIT(str)
	p:	  string/rs-head start
	len:  end/head - start/head
	neg?: no

	c: string/get-char p unit
	if any [
		c = as-integer #"+"
		c = as-integer #"-"
	][
		neg?: c = as-integer #"-"
		p: p + unit
		len: len - 1
	]
	n: 0
	until [
		c: string/get-char p unit

		m: n * 10
		if m < n [SET_RETURN(none-value) exit]			;-- return NONE on overflow
		n: m

		m: n + c - #"0"
		if m < n [SET_RETURN(none-value) exit]			;-- return NONE on overflow
		n: m

		p: p + unit
		len: len - 1
		zero? len
	]
	integer/box either neg? [0 - n][n]
]

trans-word: routine [
	stack [block!]
	src   [string!]
	type  [datatype!]
	/local
		value [red-value!]
][
	value: as red-value! word/push-in (symbol/make-alt src) stack
	set-type value type/value
]

trans-pop: function [stack [block!]][
	value: last stack
	remove back tail stack
	append/only last stack value
]

transcode: func [
	src		[string!]
	dst		[block! none!]
	return: [block!]
	/local
		cs stack pos s e value line count? wrong-delimiters comment-rule
		digit hexa hexa-char not-word-char not-word-1st
		not-file-char not-str-char not-mstr-char caret-char
		non-printable-char integer-end block-rule literal-value
		any-value escaped-char char-rule line-string nested-curly-braces
		multiline-string string-rule cnt trans-string new base c ws
][
	cs:		[- - - - - - - - - - - - - -]
	stack:	clear []
	count?:	yes											;-- if TRUE, lines counter is enabled
	line: 	1

	append/only stack any [dst make block! 4]

	trans-string: [
		new: make string! (index? e) - index? s
		parse/case copy/part s e [						;@@ add /part option to parse!
			any [
				escaped-char (append new value)
				| set c skip (append new c)
			]
		]
		new
	]

	if cs/1 = '- [
		cs/1:  charset "0123465798"						;-- digit
		cs/2:  union cs/1 charset "ABCDEF"				;-- hexa
		cs/3:  union cs/2 charset "abcdef"				;-- hexa-char
		cs/4:  charset {/\^^,[](){}"#%$@:;}				;-- not-word-char
		cs/5:  union union cs/4 cs/1 charset {'}		;-- not-word-1st
		cs/6:  charset {[](){}"%@:;}					;-- not-file-char
		cs/7:  #"^""									;-- not-str-char
		cs/8:  #"}"										;-- not-mstr-char
		cs/9:  charset [#"^(40)" - #"^(5F)"]			;-- caret-char
		cs/10: charset [#"^(00)" - #"^(1F)"]			;-- non-printable-char
		cs/11: charset {^{"[]);}						;-- integer-end
		cs/12: charset " ^-^M"							;-- ws-ASCII, ASCII common whitespaces
		cs/13: charset [#"^(80)" - #"^(8A)"]			;-- ws-U+2k, Unicode spaces in the U+2000-U+200A range
		cs/14: charset [#"^(00)" - #"^(1F)"] 			;-- ASCII control characters

	]
	set [
		digit hexa hexa-char not-word-char not-word-1st
		not-file-char not-str-char not-mstr-char caret-char
		non-printable-char integer-end ws-ASCII ws-U+2k control-char
	] cs

	;-- Whitespaces list from: http://en.wikipedia.org/wiki/Whitespace_character
	ws: [
		pos: #"^/" (
			if count? [
				line: line + 1
				;append/only lines to block! stack/tail?
			]
		)
		| ws-ASCII										;-- only the common whitespaces are matched
		| #"^(0085)"									;-- U+0085 (Newline)
		| #"^(00A0)"									;-- U+00A0 (No-break space)
		| #"^(1680)"									;-- U+1680 (Ogham space mark)
		| #"^(180E)"									;-- U+180E (Mongolian vowel separator)
		| ws-U+2k										;-- U+2000-U+200A range
		| #"^(2028)"									;-- U+2028 (Line separator)
		| #"^(2029)"									;-- U+2029 (Paragraph separator)
		| #"^(202F)"									;-- U+202F (Narrow no-break space)
		| #"^(205F)"									;-- U+205F (Medium mathematical space)
		| #"^(3000)"									;-- U+3000 (Ideographic space)
	]

	newline-char: [
		#"^/"
		| #"^(0085)"									;-- U+0085 (Newline)
		| #"^(2028)"									;-- U+2028 (Line separator)
		| #"^(2029)"									;-- U+2029 (Paragraph separator)
	]

	counted-newline: [pos: #"^/" (line: line + 1)]

	ws-no-count: [(count?: no) ws (count?: yes)]

	escaped-char: [
		"^^(" [
			[										;-- special case first
				"null" 	 (value: #"^(00)")
				| "back" (value: #"^(08)")
				| "tab"  (value: #"^(09)")
				| "line" (value: #"^(0A)")
				| "page" (value: #"^(0C)")
				| "esc"  (value: #"^(1B)")
				| "del"	 (value: #"^(7F)")
			]
			| s: [2 6 hexa-char] e: (				;-- Unicode values allowed up to 10FFFFh
				value: encode-UTF8-char s e
			)
		] #")"
		| #"^^" [
			[
				#"/" 	(value: #"^/")
				| #"-"	(value: #"^-")
				| #"?" 	(value: #"^(del)")			;@@FIXME
				| #"^^" (value: #"^^")				;-- caret escaping case
				| #"{"	(value: #"{")
				| #"}"	(value: #"}")
				| #"^""	(value: #"^"")
			]
			| s: caret-char (value: s/1 - 64)
		]
	]

	char-rule: [
		{#"} s: [
			 escaped-char
			| ahead [non-printable-char | not-str-char] break
			| skip (value: s/1)
		] {"}
	]

	line-string: [
		{"} s: any [
			{^^"} e:
			| ahead [#"^"" | newline-char] break
			| skip e:
		]
		e: {"}
	]

	nested-curly-braces: [
		(cnt: 1)
		any [
			counted-newline
			| "^^{" | "^^}"
			| #"{" (cnt: cnt + 1)
			| e: #"}" if (zero? cnt: cnt - 1) fail
			| skip
		]
		#"}"
	]

	multiline-string: [#"{" s: nested-curly-braces]

	string-rule: [line-string | multiline-string]

	symbol-rule: [
		some [ahead [not-word-char | ws-no-count | control-char] break | skip] e:
	]

	begin-symbol-rule: [								;-- 1st char in symbols is restricted
		[not ahead [not-word-1st | ws-no-count | control-char]]
		opt symbol-rule
	]

	path-rule: [
		ahead slash (									;-- path detection barrier
			stack/push path!
			stack/push to type copy/part s e			;-- push 1st path element
		)
		some [
			slash
			s: [
				integer-number-rule
				| begin-symbol-rule			(type: word!)
				| paren-rule 				(type: paren!)
				| #":" s: begin-symbol-rule	(type: get-word!)
				;@@ add more datatypes here
			] (
				stack/push either type = paren! [		;-- append path element
					value
				][
					to type copy/part s e
				]
				type: path!
			)
			opt [#":" (type: set-path!)]
		]
		(value: stack/pop type)
	]

	word-rule: 	[
		s: begin-symbol-rule [
			path-rule 									;-- path matched
			| (type: word!)
			  opt [#":" (type: set-word!)]
			  (trans-word last stack copy/part s e type) ;-- word or set-word matched
		]
	]

	get-word-rule: [
		#":" (type: get-word!) s: begin-symbol-rule [
			path-rule (
				value/1: to get-word! value/1			;-- workaround missing get-path! in R2
			)
			| (
				type: get-word!
				value: copy/part s e					;-- word matched
			)
		]
	]

	lit-word-rule: [
		#"'" (type: word!) s: begin-symbol-rule [
			path-rule (type: lit-path!)					;-- path matched
			| (
				type: lit-word!
				value: copy/part s e					;-- word matched
			)
		]
	]

	issue-rule: [#"#" (type: issue!) s: symbol-rule]

	refinement-rule: [slash (type: refinement!) s: symbol-rule]

	slash-rule: [s: [slash opt slash] e:]

	hexa-rule: [2 8 hexa e: #"h" (type: integer!)]

	integer-number-rule: [
		opt [#"-" | #"+"] digit any [digit | #"'" digit] e:
	]

	integer-rule: [
		integer-number-rule
		ahead [integer-end | ws-no-count | end]
	]

	block-rule: [
		#"[" (append/only stack make block! 4)
		any-value
		#"]" (trans-pop stack)
	]

	paren-rule: [
		#"(" (append/only stack make paren! 4)
		any-value
		#")" (trans-pop stack)
	]

	comment-rule: [#";" [to lf | to end]]

	wrong-delimiters: [
		pos: [
			  #"]" (value: #"[") | #")" (value: #"(")
			| #"[" (value: #"]") | #"(" (value: #")")
		] :pos
		(print ["missing matching" value])
	]

	literal-value: [
		pos: (e: none) s: [
			comment-rule
			;| multiline-comment-rule
			;| escaped-rule    (stack/push value)
			| integer-rule		(append last stack trans-integer s e)
			;| hexa-rule		  (stack/push decode-hexa	 copy/part s e)
			| word-rule
			;| lit-word-rule	  (stack/push to type value)
			;| get-word-rule	  (stack/push to type value)
			;| refinement-rule (stack/push to refinement! copy/part s e)
			;| slash-rule	  (stack/push to word! 	   	 copy/part s e)
			;| issue-rule	  (stack/push to issue!	   	 copy/part s e)
			;| file-rule		  (stack/push load-file		 copy/part s e)
			| char-rule			(append last stack value)
			| block-rule
			| paren-rule
			| string-rule		(append last stack do trans-string)
			;| binary-rule	  (stack/push load-binary s e)
		]
	]

	any-value: [pos: any [literal-value | ws]]

	parse/case src [any-value opt wrong-delimiters]
	stack/1
]


TESTS: added tests of using string and char values as a path to series - issue #939

Red [
	Title:   "Red series test script"
	Author:  "Nenad Rakocevic & Peter W A Wood"
	File: 	 %series-test.red
	Tabs:	 4
	Rights:  "Copyright (C) 2011-2013 Nenad Rakocevic & Peter W A Wood. All rights reserved."
	License: "BSD-3 - https://github.com/dockimbel/Red/blob/origin/BSD-3-License.txt"
]

#include  %../../../quick-test/quick-test.red

~~~start-file~~~ "series"

===start-group=== "first, second, third, fourth, fifth"

	--test-- "series-fstff-1"
	  sf1-ser:  [1 2 3 4 5]
	--assert 1 = first sf1-ser
	--assert 2 = second sf1-ser
	--assert 3 = third sf1-ser
	--assert 4 = fourth sf1-ser
	--assert 5 = fifth sf1-ser
	--assert 5 = last sf1-ser

	--test-- "series-fstff-2"
	  sf2-ser:  [1 2 3 4 5]
	--assert 2 = first next sf2-ser

	--test-- "series-fstff-3"
	  sf3-ser:  "12345"
	--assert 49 = first sf3-ser
	--assert 53 = last sf3-ser

	--test-- "series-fstff-4"
	  sf4-ser:  [1 2 3 4 5]
	--assert none = fifth next sf4-ser

	--test-- "series-fstff-5"
	  sf5-ser:  "12345"
	--assert 53 = fifth sf5-ser

	--test-- "series-fstff-6"
	;;  stf6-ser: #{000102}
	;;--assert 0 = first stf6-ser

	--test-- "series-fstff-7"
	--assert 'a = first [a b c d]

	--test-- "series-fstff-8"
	--assert 'a = first first first first first first first first first [[[[[[[[[a]]]]]]]]]

	--test-- "series-fstff-9"
	--assert #"^(00)" = first "^(00)"

	--test-- "series-fstff-10"
	--assert #"^(00)" = first "^(00)a"

	--test-- "series-fstff-11"
	--assert #"^(00)" = second "a^(00)"

	--test-- "series-fstff-12"
	--assert #"^(00)" = second "a^(00)b"

===end-group===

===start-group=== "next"
  --test-- "series-next-1"
  --assert 2 = first next [1 2 3 4 5]
  --test-- "series-next-2"
  --assert 3 = first next next [1 2 3 4 5]
  --test-- "series-next-3"
  --assert 4 = first next next next [1 2 3 4 5]
  --test-- "series-next-4"
  --assert 5 = first next next next next [1 2 3 4 5]
  --test-- "series-next-5"
  --assert none = first next next next next next [1 2 3 4 5]
  --test-- "series-next-6"
  --assert 50 = first next "12345"
  --test-- "series-next-7"
  --assert 51 = first next next "12345"
  --test-- "series-next-8"
  --assert 52 = first next next next "12345"
  --test-- "series-next-9"
  --assert 53 = first next next next next "12345"
  --test-- "series-next-10"
  --assert none = first next next next next next "12345"
  --test-- "series-next-11"
  --assert #"^(00)" = first next "a^(00)"
  --test-- "series-next-12"
  --assert #"^(00)" = first next "a^(00)b"
===end-group===

===start-group=== "back"
  --test-- "series-back-1"
  --assert 1 = first back next [1 2 3 4 5]
  --test-- "series-back-2"
  --assert 1 = first back back next next [1 2 3 4 5]
  --test-- "series-back-3"
  --assert 1 = first back back back next next next [1 2 3 4 5]
  --test-- "series-back-4"
  --assert 1 = first back back back back next next next next [1 2 3 4 5]
  --test-- "series-back-5"
  --assert 1 = first back back back back back next next next next next [1 2 3 4 5]
  --test-- "series-back-6"
  --assert 49 = first back next "12345"
  --test-- "series-back-7"
  --assert 50 = first back next next "12345"
  --test-- "series-back-8"
  --assert 51 = first back next next next "12345"
  --test-- "series-back-9"
  --assert 52 = first back next next next next "12345"
  --test-- "series-back-10"
  --assert 53 = first back next next next next next "12345"
  --test-- "series-back-11"
  --assert 49 = first back "12345"
===end-group===

===start-group=== "tail"
  --test-- "series-tail-1"
  --assert 5 = first back tail [1 2 3 4 5]
  --test-- "seried-tail-2"
  --assert none = pick tail [1 2 3 4 5] 1
===end-group===

===start-group=== "pick"

  --test-- "series-pick-1"
  --assert none = pick "" 1

  --test-- "series-pick-2"
  --assert none = pick "" 0

  --test-- "series-pick-3"
  --assert none = pick "" 2

  --test-- "series-pick-4"
  --assert 49 = pick "12345" 1

  --test-- "series-pick-5"
  --assert 53 = pick "12345" 5

  --test-- "series-pick-6"
  --assert 1 = pick [1 2 3 4 5] 1

  --test-- "series-pick-7"
  --assert 2 = pick [1 2 3 4 5] 2

  --test-- "series-pick-8"
  --assert 4 = pick [1 2 3 4 5] 4

  --test-- "series-pick-9"
  --assert 5 = pick [1 2 3 4 5] 5

  --test-- "series-pick-10"
  --assert 2 = pick next next next [1 2 3 4 5] -2

  --test-- "series-pick-11"
  --assert 3 = pick next next next [1 2 3 4 5] -1

  --test-- "series-pick-12"
  --assert none = pick next next next [1 2 3 4 5] 0

  --test-- "series-pick-13"
  --assert none = pick "12345" -1

  --test-- "series-pick-14"
    sp14-i: 1
  --assert 1 = pick [1 2 3 4 5] sp14-i

  --test-- "series-pick-15"
    sp15-i: 4
  --assert 4 = pick [1 2 3 4 5] sp15-i

  --test-- "series-pick-16"
    sp16-i: -2
  --assert 2 = pick next next next [1 2 3 4 5] sp16-i

  --test-- "series-pick-17"
    sp17-i: 0
  --assert none = pick next next next [1 2 3 4 5] sp17-i

  --test-- "series-pick-18"
    sp18-i: -1
  --assert none = pick "12345" sp18-i

===end-group===

===start-group=== "select"
  --test-- "series-select-1"
  --assert 2 = select [1 2 3 4 5] 1
  --test-- "series-select-2"
  --assert 5 = select [1 2 3 4 5] 4
  --test-- "series-select-3"
  --assert none = select [1 2 3 4 5] 0
  --test-- "series-select-4"
  --assert none = select [1 2 3 4 5] 5

	--test-- "series-select-5"
		a: [2 3 5 test #"A" a/b 5 "tesT"]
		--assert #"A" = select a 'test

	--test-- "series-select-6"
		list: [a 1 b 2 c 3]
		--assert 2 = list/b

	--test-- "series-select-6"
		--assert 'test = select/skip a 5 2

	--test-- "series-select-7"
		s: "Hello, Red World!"
		--assert #"e" = select s #"r"

	--test-- "series-select-8"
		--assert #"l" = select/last s #"r"

	--test-- "series-select-9"
		--assert #"d" = select/skip s "e" 2

	--test-- "series-select-10"
		--assert none? select s #"!"

===end-group===

===start-group=== "append"
  --test-- "series-append-1"
  --assert 6 = last append [1 2 3 4 5] 6
  --test-- "series-append-2"
  --assert 6 = last append [1 2 3 4] [5 6]
  --assert 4 = fourth append [1 2 3 4] [5 6]
  --assert 5 = fifth append [1 2 3 4] [5 6]
  --test-- "series-append-3"
  --assert 55 = last append "12345" "67"
  --test-- "series-append-4"
  --assert 233 = last append "abcde" "é" ;; utf-8 C3 A9
  --test-- "series-append-5"
  --assert 49 = last append "abcdeé" "1" ;; utf-8 C3 A9
  --test-- "series-append-6"
  --assert 10000 = last append "abcde" "✐"
  --test-- "series-append-7"
  --assert 48 = last append "abcde^(2710)" "0"
  --test-- "series-append-8"
  --assert 10000 = last append "abcdeé" "^(2710)"
  --test-- "series-append-9"
  --assert 233 = last append "abcde^(2710)" "é"
  --test-- "series-append-10"
  --assert 65536 = last append "abcde" "^(010000)"
  --test-- "series-append-11"
  --assert 48 = last append "abcde^(010000)" "0"
  --test-- "series-append-12"
  --assert 65536 = last append "abcde^(2710)é" "^(010000)"

  --test-- "series-append-13"
	blk: make block! 1
	append blk 'x/y
	append/only blk  'r/s
	--assert "[x y r/s]" = mold blk

  --test-- "series-append-14"
	blk: [1 2]
	append/dup/part blk [4 5 6] 3 2
	--assert "[1 2 4 5 4 5 4 5]" = mold blk

  --test-- "series-append-15"
	blk: [1 2]
	append/dup/part blk [4 5 6] 2 3
	--assert "[1 2 4 5 6 4 5 6]" = mold blk

  --test-- "series-append-16"
	str: "12"
	append/dup/part str "456" 3 2
	--assert str = "12454545"

  --test-- "series-append-17"
	str: "12"
	append/part/dup str "456" 3 2
	--assert str = "12456456"

===end-group===

===start-group=== "series-equal"

  --test-- "series-equal-1"
  --assert [] = []

  --test-- "series-equal-2"
    se2-b: []
  --assert [] = se2-b

  --test-- "series-equal-3"
    se3-b: []
  --assert se3-b = []

  --test-- "series-equal-4"
    se4-b: [1]
  --assert se4-b = [1]

  --test-- "series-equal-5"
    se5-b: ["abcde"]
  --assert se5-b = ["abcde"]

===end-group===

===start-group=== "series-find"

  --test-- "series-find-1"
  --assert 3 = first find [1 2 3 4 5] 3

  --test-- "series-find-2"
  --assert 'a = first find [a b c d e] 'a

  --test-- "series-find-3"
  --assert 'e = first find [a b c d e] 'e

  --test-- "series-find-4"
  --assert none = find [] 'a

  --test-- "series-find-5"
  --assert none = find [1 2 3 4] 'a

  --test-- "series-find-6"
  --assert none = find next [a b c d e] 'a

  --test-- "series-find-7"
  --assert 51 = first find "12345" "3"

  --test-- "series-find-8"
  --assert 51 = first find "12345" "^(33)"

  --test-- "series-find-9"
  --assert 51 = first find "12345" first "^(33)"

  --test-- "series-find-10"
  --assert 51 = first find "12345" #"3"

  --test-- "series-find-11"
  --assert 51 = first find "12345" #"^(33)"

  --test-- "series-find-12"
  --assert #"3" = first find "12345" #"3"

  --test-- "series-find-13"
  --assert #"a" = first find "abcdefghijklmno" #"a"

  --test-- "series-find-14"
  --assert "ghijklmno" = find "abcdefghijklmno" "ghij"

  --test-- "series-find-15"
  --assert #"o" = first find "abcdefghijklmno" #"o"

  --test-- "series-find-16"
  --assert "o" = find "abcdefghijklmno" #"o"

  --test-- "series-find-17"
  --assert #"o" = first find "abcdefghijklmno" "o"

  --test-- "series-find-18"
  --assert "o" = find "abcdefghijklmno" "o"

  --test-- "series-find-19"
  --assert none = find "" #"a"

  --test-- "series-find-20"
  --assert none = find "" #"^(00)"

  --test-- "series-find-21"
  --assert none = find "" ""

  --test-- "series-find-22"
  --assert "^(00)" = find "^(00)" "^(00)"

  --test-- "series-find-23"
  --assert "a^(00)" = find "a^(00)" "a^(00)"

  --test-- "series-find-24"
  --assert "^(00)a" = find "^(00)a" "^(00)a"

  --test-- "series-find-25"
  --assert "^(00)" = find "^(00)" #"^(00)"

  --test-- "series-find-26"
  --assert #"^(00)" = first find "^(00)" #"^(00)"

  --test-- "series-find-27"
  --assert #"é" = first find "abcdeé" #"é"

  --test-- "series-find-28"
  --assert "é" = find "abcdeé" "é"

  --test-- "series-find-29"
  --assert "é" = find append "abcde" "é" "é"

  --test-- "series-find-30"
  --assert 10000 = first find "abcde✐" "✐"

  --test-- "series-find-30a"
  --assert 10000 = first find "abcde✐" #"✐"

  --test-- "series-find-31"
  --assert none = find "012345" 48

  --test-- "series-find-32"
  --assert "^(010000)" = find "abcde^(2710)é^(010000)" "^(010000)"

  --test-- "series-find-33"
  --assert "^(010000)cde^(2710)é" = find "ab^(010000)cde^(2710)é" #"^(010000)"

  --test-- "series-find-34"
  --assert "^(010000)cde^(2710)é" = find "ab^(010000)cde^(2710)é" "^(010000)"

	--test-- "series-find-35"
		a: [2 3 5 test #"A" a/b 5 "tesT"]
		append a datatype!
		--assert 3 = index? find a 5

	--test-- "series-find-36"
		--assert 8 = index? find a "test"

	--test-- "series-find-37"
		--assert none? find a 99

	--test-- "series-find-38"
		--assert none? find/skip a 'test 2

	--test-- "series-find-39"
		--assert 4 = index? find/skip a 'test 3

	--test-- "series-find-40"
		--assert 7 = index? find/last a 5

	--test-- "series-find-41"
		--assert 2 = index? find/reverse skip a 4 3

	--test-- "series-find-42"
		--assert 8 = index? find skip a 3 "test"

	--test-- "series-find-43"
		--assert none? find/last/part a 3 1

	--test-- "series-find-44"
		--assert 2 = index? find/last/part a 3 2

	--test-- "series-find-45"
		--assert none? find/part a 'test 3

	--test-- "series-find-46"
		--assert 4 = index? find/part a 'test 4

	--test-- "series-find-47"
		--assert 2 = index? find a [3 5]

	--test-- "series-find-48"
		--assert 3 = index? find a [5 'test]

	--test-- "series-find-49"
		--assert none? find a 'a/b

	--test-- "series-find-50"
		--assert 6 = index? find/only a 'a/b

	--test-- "series-find-51"
		--assert 2 = index? find/match a 2

	--test-- "series-find-52"
		--assert none? find/match a 3

	--test-- "series-find-53"
		--assert 4 = index? find/match a [2 3 5]

	--test-- "series-find-54"
		--assert none? find/match next a [2 3 5]

	--test-- "series-find-55"
		--assert 4 = index? find/tail a 5

	--test-- "series-find-56"
		--assert 3 = index? find 'a/b/3/d 3

	--test-- "series-find-57"
		--assert 2 = index? find 'a/b/3/d 'b

	--test-- "series-find-58"
		s: "Hello, Red World!"
		--assert 6 = index? find s ","

	--test-- "series-find-59"
		--assert 8 = index? find s "Red"

	--test-- "series-find-60"
		--assert 8 = index? find s "red"

	--test-- "series-find-61"
		--assert 6 = index? find s #","

	--test-- "series-find-62"
		--assert 1 = index? find "^(00)" "^(00)"

	--test-- "series-find-63"
		--assert 5 = index? find/skip s #"o" 2

	--test-- "series-find-64"
		--assert 13 = index? find/skip s #"o" 3

	--test-- "series-find-65"
		--assert 15 = index? find/last s #"l"

	--test-- "series-find-66"
		--assert 13 = index? find/last s "o"

	--test-- "series-find-67"
		--assert none? find/part s #"o" 4

	--test-- "series-find-68"
		--assert 5 = index? find/part s #"o" 5

	--test-- "series-find-69"
		--assert 2 = index? find/match s #"h"

	--test-- "series-find-70"
		--assert 5 = index? find/match s "hell"

	--test-- "series-find-71"
		--assert 5 = index? find/match s "Hell"

	--test-- "series-find-72"
		--assert none? find/match/case s "hell"

	--test-- "series-find-73"
		--assert 5 = index? find/match/case s "Hell"

	--test-- "series-find-74"
		--assert none? find/match next s "hell"

	--test-- "series-find-75"
		--assert 8 = index? find/case s "Red"

===end-group===

===start-group=== "remove"

	--test-- "remove-blk-1"
		a: [1 2 3]
		--assert [2 3] = remove a
		--assert [2 3] = a

	--test-- "remove-blk-2"
		a: [1 2 3]
		--assert [3] = remove next a
		--assert [1 3] = a

	--test-- "remove-blk-3"
		--assert tail? head remove []

	--test-- "remove-blk-4"
		a: [1 2 3]
		--assert [3] = remove/part a 2
		--assert [3] = a

	--test-- "remove-blk-5"
		a: [1 2 3]
		--assert [1 2 3] = remove/part a a

	--test-- "remove-blk-6"
		a: [1 2 3]
		--assert [2 3] = remove/part a next a
		--assert [2 3] = a

	--test-- "remove-blk-7"
		a: [1 2 3]
		--assert [1 2 3] =  remove/part a 0

	--test-- "remove-str-1"
		a: "123"
		--assert "23" = remove a
		--assert "23" = a

	--test-- "remove-str-2"
		a: "123"
		--assert "3" = remove next a
		--assert "13" = a

	--test-- "remove-str-3"
		--assert tail? head remove ""

	--test-- "remove-str-4"
		a: "123"
		--assert "3" = remove/part a 2
		--assert "3" = a

	--test-- "remove-str-5"
		a: "123"
		--assert "123" = remove/part a a

	--test-- "remove-str-6"
		a: "123"
		--assert "23"= remove/part a next a
		--assert "23" = a

	--test-- "remove-str-7"
		a: "123"
		--assert "123" = remove/part a 0

	--test-- "remove-str-8"
		a: "str123"
		--assert "" = remove back tail a
		--assert "str12" = head a

===end-group===

===start-group=== "clear"

	--test-- "clear-1"
		c1-b: [1 2 3 4 5]
	--assert [] = clear c1-b

	--test-- "clear-2"
		c2-s: "a"
	--assert "" = clear c2-s

	--test-- "clear-3"
		c3-s: "é"
	--assert "" = clear c2-s

	--test-- "clear-4"
		c4-s: "✐"
	--assert "" = clear c4-s

	--test-- "clear-5"
		c5-s: "^(2710)"
	--assert "" = clear c5-s

	--test-- "clear-6"
		c6-b: [a [b] c]
		clear second c6-b
	--assert [a [] c] = c6-b

	--test-- "clear-7"
		c7-b: [a b c d e f]
		c7-b: next next next c7-b
	--assert [a b c] = head clear c7-b

	--test-- "clear-8"
		c8-b: "123^(2710)"
		c8-b: next next next c8-b
	--assert "123" = head clear c8-b

	--test-- "clear-9"
		c9-b: "^(2710)123"
		c9-b:  next c9-b
		--assert "^(2710)" = head clear c9-b

===end-group===

===start-group=== "at"

	--test-- "at-1 #issue 501"
		--assert "c" = at tail "abc" -1
		--assert "" = at tail "abc" 0

	--test-- "at-2"
		--assert "bcde" = at "abcde" 2
		--assert "abcde" = at "abcde" 1
		--assert "abcde" = at "abcde" 0
		--assert "abcde" = at "abcde" -1
		--assert "abcde" = at "abcde" -256
		--assert "e" = at "abcde" 5
		--assert "" = at "abcde" 6
		--assert "" = at "abcde" 1028

	--test-- "at-3"
		--assert [b c d e] = at [a b c d e] 2
		--assert [a b c d e] = at [a b c d e] 1
		--assert [a b c d e] = at [a b c d e] 0
		--assert [a b c d e] = at [a b c d e] -1
		--assert [a b c d e] = at [a b c d e] -256
		--assert [e] = at [a b c d e] 5
		--assert [] = at [a b c d e] 6
		--assert [] = at [a b c d e] 1028

===end-group===

===start-group=== "replace"

	--test-- "replace-block-1-issue-#667"
		code: [print "Hello"]
		--assert 'print = first replace code "Hello" "Cheers"
		--assert "Cheers" = second code

===end-group===

===start-group=== "max/min"			;-- have some overlap with lesser tests

	--test-- "max1"
		--assert "abe"  = max "abc" "abe"
		--assert "abcd" = max "abc" "abcd"

	--test-- "min1"
		--assert ""		= min "" 	"abcdef"
		--assert "abc"	= min "abc" "abcd"

	--test-- "max2"					;@@ need to add tests for word!, path!
		blk1: [1 1.0 #"a" "ab" %ab/cd [] [2] (1 2)]
		blk2: [1 1.0 #"a" "ab" %ab/cd [] [2] (1 3)]
		--assert blk2 = max blk1 blk2
		blk1: next blk1
		--assert blk2 = max blk1 blk2

===end-group===

===start-group=== "reverse"

	--test-- "reverse-str-1"			;-- 4 bytes code point
		--assert "dc𠃌21ba" = reverse "ab12𠃌cd"	;--  = #"^(E818)"
                                                    	;-- 𠃌 = #"^(200CC)"
	--test-- "reverse-str-2"			;-- 2 bytes code point
		--assert "dc21ba" = reverse "ab12cd"

	--test-- "reverse-str-3"			;-- 1 bytes code point
		--assert "dc21ba" = reverse "ab12cd"

	--test-- "reverse-str-4"
		--assert "1ba2𠃌cd" = reverse/part "ab12𠃌cd" 4

	--test-- "reverse-str-5"
		s: "abcdef"
		p: next next next s
		--assert "cbadef" = reverse/part s p

	--test-- "reverse-file-1"			;-- inherit from string!
		--assert %321cba = reverse/part %abc123 6

	--test-- "reverse-blk-1"
		--assert [a b c d] = reverse [d c b a]

	--test-- "reverse-blk-2"
		--assert [c b [a] d] = reverse/part [[a] b c d] 3

	--test-- "reverse-blk-3"
		blk: [1 [2] a b c ]
		p: next next next blk
		--assert [a [2] 1 b c] = reverse/part blk p

	--test-- "reverse-path-1"			;-- inherit from block!
		p1: first [ab/cd/ef]
		p2: first [ef/cd/ab]
		--assert p2 = reverse p1

===end-group===

===start-group=== "take"

	--test-- "take-blk-1"
		a: [1 2 3]
		--assert 1 = take a
		--assert [2 3] = a

	--test-- "take-blk-2"
		a: [1 2 3]
		--assert 3 = take/last a
		--assert [1 2] = a

	--test-- "take-blk-3"
		a: [1 2 3]
		--assert 2 = take next a
		--assert [1 3] = a

	--test-- "take-blk-4"
		--assert none = take []

	--test-- "take-blk-5"
		a: [1 2 3]
		--assert [1 2] = take/part a 2
		--assert [3] = a

	--test-- "take-blk-6"
		a: [1 2 3]
		--assert 1 = take/part a next a
		--assert [2 3] = a

	--test-- "take-blk-7"
		a: [1 2 3]
		--assert [2 3] = take/part/last a next a
		--assert [1] = a

	--test-- "take-blk-8"
		a: [1 2 3]
		--assert [] = take/part a 0
		--assert [1 2 3] = a

	--test-- "take-blk-9"
		b: "abc"
		a: reduce [b 2 3]
		--assert b = c: take/deep a
		--assert b <> remove c

	--test-- "take-blk-5"
		a: [1 2 3]
		--assert [1 2 3] = take/part a 22
		--assert [] = a

	--test-- "take-str-1"
		a: "123"
		--assert #"1" = take a
		--assert "23" = a

	--test-- "take-str-2"
		a: "123"
		--assert #"3" = take/last a
		--assert "12" = a

	--test-- "take-str-3"
		a: "123"
		--assert #"2" = take next a
		--assert "13" = a

	--test-- "take-str-4"
		--assert none = take ""

	--test-- "take-str-5"
		a: "123"
		--assert "12" = take/part a 2
		--assert "3" = a

	--test-- "take-str-6"
		a: "123"
		--assert "23" = take/part/last a 2
		--assert "1" = a

	--test-- "take-str-7"
		a: "123"
		--assert "" = take/part a a
		--assert "123" = a

	--test-- "take-str-8"
		a: "123"
		--assert #"1"= take/part a next a
		--assert "23" = a

	--test-- "take-str-9"
		a: "123"
		--assert "23" = take/part/last a next a
		--assert "1"  = a

	--test-- "take-str-10"
		a: "123"
		--assert "123" = take/part a 22
		--assert "" = a
===end-group===

===start-group=== "swap"

	--test-- "swap-str-1"			;-- 4 bytes code point
		a: "1234"
		b: "𠃌"						;-- 𠃌 = #"^(200CC)"
		--assert "𠃌234" = swap a b
		--assert "𠃌234" = a
		--assert "1"	 = b

	--test-- "swap-str-2"			;-- 2 bytes code point
		a: "1234"
		b: "ab"					;--  = #"^(E818)"
		--assert "234" = swap a next b
		--assert "234" = a
		--assert "a1b"	 = b

	--test-- "swap-str-3"			;-- 1 bytes code point
		--assert "a234" = swap "1234" "abc"

	--test-- "swap-str-4"
		--assert "123" = swap "123" ""

	--test-- "swap-blk-1"
		a: [1 2]
		b: [a b]
		--assert [a 2] = swap a b
		--assert [a 2] = a
		--assert [1 b] = b

	--test-- "swap-blk-2"
		a: [1 2]
		b: [a b]
		--assert [a]   = swap next a b
		--assert [1 a] = a
		--assert [2 b] = b

	--test-- "swap-blk-3"
		--assert [1 a] = swap [1 a] []

===end-group===

===start-group=== "trim"

	str: " ^(A0) ^-a b  ^- c  ^(2000) "
	mstr: {   a ^-1^/    ab2^-  ^/  ac3  ^/  ^/^/}

	--test-- "trim-str-1"
		--assert "a b  ^- c" = trim copy str

	--test-- "trim-str-2"
		--assert "a ^-1^/ab2^/ac3^/" = trim copy mstr

	--test-- "trim-str-3"
		--assert "a ^-1^/    ab2^-  ^/  ac3  ^/  ^/^/" = trim/head copy mstr

	--test-- "trim-str-4"
		--assert "   a ^-1^/    ab2^-  ^/  ac3" = trim/tail copy mstr

	--test-- "trim-str-5"
		--assert "a ^-1^/    ab2^-  ^/  ac3" = trim/head/tail copy mstr

	--test-- "trim-str-6"
		--assert "a 1 ab2 ac3" = trim/lines copy mstr

	--test-- "trim-str-7"
		--assert "a1ab2ac3" = trim/all copy mstr

	--test-- "trim-str-8"
		--assert "    ^-1^/    2^-  ^/  c3  ^/  ^/^/" = trim/with copy mstr "ab"

	--test-- "trim-str-9"
		--assert "    ^-1^/    b2^-  ^/  c3  ^/  ^/^/" = trim/with copy mstr #"a"

	--test-- "trim-str-10"
		--assert "    ^-1^/    b2^-  ^/  c3  ^/  ^/^/" = trim/with copy mstr 97

	--test-- "trim-block-1"
		--assert [1 2] = trim [#[none] 1 #[none] 2 #[none]]

===end-group===

===start-group=== "sort"

	--test-- "sort-str-1"			;-- 4 bytes code point
		a: "g4C28c𠃌9A15Hf3iEG076eBIdbFaDh"
		--assert "0123456789AaBbCcdDEefFGghHIi𠃌" = sort a

	--test-- "sort-str-2"			;-- 2 bytes code point
		a: "g4C28c大9A15Hf3iEG076eBIdbFaDh"
		--assert "0123456789AaBbCcdDEefFGghHIi大" = sort a

	--test-- "sort-str-3"			;-- 1 bytes code point
		a: "g4C28c9A15Hf3iEG076eBIdbFaDh"
		--assert "0123456789AaBbCcdDEefFGghHIi" = sort a
		--assert "0123456789ABCDEFGHIabcdefghi" = sort/case a
		--assert "ihgfedcbaIHGFEDCBA9876543210" = sort/case/reverse a

	--test-- "sort-str-4"
		a: "4gh2ab1cd3ef"
		--assert "1cd2ab3ef4gh" = sort/skip a 3
		--assert "12abcd3ef4gh" = sort/part a 6
		--assert "34efgh" = sort/part skip a 6 tail a

	--test-- "sort-blk-1"
		a: [bc 799 ab2 42 bb1 321.3 "Mo" "Curly" "Larry" -24 0 321.8]
		--assert ["Curly" "Larry" "Mo" -24 0 42 321.3 321.8 799 ab2 bb1 bc] = sort a
		--assert [bc bb1 ab2 799 321.8 321.3 42 0 -24 "Mo" "Larry" "Curly"] = sort/reverse a

	--test-- "sort-blk-2"
		a: ["Larry" 45 "Curly" 50 "Mo" 42]
		--assert ["Curly" 50 "Larry" 45 "Mo" 42] = sort/skip a 2
		--assert ["Curly" "Larry" 45 50 "Mo" 42] = sort/part a 4
		--assert ["Mo" 42 45 50] = sort/part skip a 2 tail a

	--test-- "sort-blk-3"
		a: ["Larry" 45 "Curly" 50 "Mo" 42]
		--assert ["Mo" 42 "Larry" 45 "Curly" 50] = sort/skip/compare a 2 2
		--assert ["Mo" 42 "Larry" 45 "Curly" 50] = sort/skip/compare a 2 func [a b][a > b]
		--assert ["Curly" 50 "Larry" 45 "Mo" 42] = sort/skip/compare/all a 2 func [a b][a/2 > b/2]

	--test-- "sort-blk-4"
		o1: context [a: 2 i: "a"]
		o2: context [a: 1 i: "b"]
		o3: context [a: 1 i: "c"]
		o4: context [a: 1 i: "d"]
		o5: context [a: 1 i: "e"]
		o6: context [a: 1 i: "f"]
		o7: context [a: 3 i: "g"]
		o8: context [a: 3 i: "h"]
		a: reduce [o1 o2 o3 o8 o4 o5 o6 o7]
		res: reduce [o2 o3 o4 o5 o6 o1 o8 o7]
		--assert res = sort/compare/stable a func [a b][a/a - b/a]
===end-group===

===start-group=== "path access"

	--test-- "path-blk-1 : issue #939"
		pb1-b: [#"x" #"y"]
		--assert #"y" = pb1-b/(#"x")

	--test-- "path-blk-2"
		pb2-b: [#"x" #"y"]
		pb2-c: #"x"
		--assert #"y" = pb2-b/:pb2-c

	--test-- "path-str-1"
		pb1-s: "xy"
		--assert #"y" = pb1-s/(#"x")

	--test-- "path-str-2"
		ps2-s: "xy"
		ps2-c: #"x"
		--assert #"y" = ps2-s/:ps2-c

	--test-- "path-str-3"
		ps3-s: "xy"
		ps3-ss: "x"
		--assert #"y" = ps3-s/:ps3-ss

===end-group===

~~~end-file~~~

Red [
	Title:   "Red series test script"
	Author:  "Nenad Rakocevic & Peter W A Wood"
	File: 	 %series-test.red
	Tabs:	 4
	Rights:  "Copyright (C) 2011-2013 Nenad Rakocevic & Peter W A Wood. All rights reserved."
	License: "BSD-3 - https://github.com/dockimbel/Red/blob/origin/BSD-3-License.txt"
]

#include  %../../../quick-test/quick-test.red

~~~start-file~~~ "series"

===start-group=== "first, second, third, fourth, fifth"

	--test-- "series-fstff-1"
	  sf1-ser:  [1 2 3 4 5]
	--assert 1 = first sf1-ser
	--assert 2 = second sf1-ser
	--assert 3 = third sf1-ser
	--assert 4 = fourth sf1-ser
	--assert 5 = fifth sf1-ser
	--assert 5 = last sf1-ser

	--test-- "series-fstff-2"
	  sf2-ser:  [1 2 3 4 5]
	--assert 2 = first next sf2-ser

	--test-- "series-fstff-3"
	  sf3-ser:  "12345"
	--assert 49 = first sf3-ser
	--assert 53 = last sf3-ser

	--test-- "series-fstff-4"
	  sf4-ser:  [1 2 3 4 5]
	--assert none = fifth next sf4-ser

	--test-- "series-fstff-5"
	  sf5-ser:  "12345"
	--assert 53 = fifth sf5-ser

	--test-- "series-fstff-6"
	;;  stf6-ser: #{000102}
	;;--assert 0 = first stf6-ser

	--test-- "series-fstff-7"
	--assert 'a = first [a b c d]

	--test-- "series-fstff-8"
	--assert 'a = first first first first first first first first first [[[[[[[[[a]]]]]]]]]

	--test-- "series-fstff-9"
	--assert #"^(00)" = first "^(00)"

	--test-- "series-fstff-10"
	--assert #"^(00)" = first "^(00)a"

	--test-- "series-fstff-11"
	--assert #"^(00)" = second "a^(00)"

	--test-- "series-fstff-12"
	--assert #"^(00)" = second "a^(00)b"

===end-group===

===start-group=== "next"
  --test-- "series-next-1"
  --assert 2 = first next [1 2 3 4 5]
  --test-- "series-next-2"
  --assert 3 = first next next [1 2 3 4 5]
  --test-- "series-next-3"
  --assert 4 = first next next next [1 2 3 4 5]
  --test-- "series-next-4"
  --assert 5 = first next next next next [1 2 3 4 5]
  --test-- "series-next-5"
  --assert none = first next next next next next [1 2 3 4 5]
  --test-- "series-next-6"
  --assert 50 = first next "12345"
  --test-- "series-next-7"
  --assert 51 = first next next "12345"
  --test-- "series-next-8"
  --assert 52 = first next next next "12345"
  --test-- "series-next-9"
  --assert 53 = first next next next next "12345"
  --test-- "series-next-10"
  --assert none = first next next next next next "12345"
  --test-- "series-next-11"
  --assert #"^(00)" = first next "a^(00)"
  --test-- "series-next-12"
  --assert #"^(00)" = first next "a^(00)b"
===end-group===

===start-group=== "back"
  --test-- "series-back-1"
  --assert 1 = first back next [1 2 3 4 5]
  --test-- "series-back-2"
  --assert 1 = first back back next next [1 2 3 4 5]
  --test-- "series-back-3"
  --assert 1 = first back back back next next next [1 2 3 4 5]
  --test-- "series-back-4"
  --assert 1 = first back back back back next next next next [1 2 3 4 5]
  --test-- "series-back-5"
  --assert 1 = first back back back back back next next next next next [1 2 3 4 5]
  --test-- "series-back-6"
  --assert 49 = first back next "12345"
  --test-- "series-back-7"
  --assert 50 = first back next next "12345"
  --test-- "series-back-8"
  --assert 51 = first back next next next "12345"
  --test-- "series-back-9"
  --assert 52 = first back next next next next "12345"
  --test-- "series-back-10"
  --assert 53 = first back next next next next next "12345"
  --test-- "series-back-11"
  --assert 49 = first back "12345"
===end-group===

===start-group=== "tail"
  --test-- "series-tail-1"
  --assert 5 = first back tail [1 2 3 4 5]
  --test-- "seried-tail-2"
  --assert none = pick tail [1 2 3 4 5] 1
===end-group===

===start-group=== "pick"

  --test-- "series-pick-1"
  --assert none = pick "" 1

  --test-- "series-pick-2"
  --assert none = pick "" 0

  --test-- "series-pick-3"
  --assert none = pick "" 2

  --test-- "series-pick-4"
  --assert 49 = pick "12345" 1

  --test-- "series-pick-5"
  --assert 53 = pick "12345" 5

  --test-- "series-pick-6"
  --assert 1 = pick [1 2 3 4 5] 1

  --test-- "series-pick-7"
  --assert 2 = pick [1 2 3 4 5] 2

  --test-- "series-pick-8"
  --assert 4 = pick [1 2 3 4 5] 4

  --test-- "series-pick-9"
  --assert 5 = pick [1 2 3 4 5] 5

  --test-- "series-pick-10"
  --assert 2 = pick next next next [1 2 3 4 5] -2

  --test-- "series-pick-11"
  --assert 3 = pick next next next [1 2 3 4 5] -1

  --test-- "series-pick-12"
  --assert none = pick next next next [1 2 3 4 5] 0

  --test-- "series-pick-13"
  --assert none = pick "12345" -1

  --test-- "series-pick-14"
    sp14-i: 1
  --assert 1 = pick [1 2 3 4 5] sp14-i

  --test-- "series-pick-15"
    sp15-i: 4
  --assert 4 = pick [1 2 3 4 5] sp15-i

  --test-- "series-pick-16"
    sp16-i: -2
  --assert 2 = pick next next next [1 2 3 4 5] sp16-i

  --test-- "series-pick-17"
    sp17-i: 0
  --assert none = pick next next next [1 2 3 4 5] sp17-i

  --test-- "series-pick-18"
    sp18-i: -1
  --assert none = pick "12345" sp18-i

===end-group===

===start-group=== "select"
  --test-- "series-select-1"
  --assert 2 = select [1 2 3 4 5] 1
  --test-- "series-select-2"
  --assert 5 = select [1 2 3 4 5] 4
  --test-- "series-select-3"
  --assert none = select [1 2 3 4 5] 0
  --test-- "series-select-4"
  --assert none = select [1 2 3 4 5] 5

	--test-- "series-select-5"
		a: [2 3 5 test #"A" a/b 5 "tesT"]
		--assert #"A" = select a 'test

	--test-- "series-select-6"
		list: [a 1 b 2 c 3]
		--assert 2 = list/b

	--test-- "series-select-6"
		--assert 'test = select/skip a 5 2

	--test-- "series-select-7"
		s: "Hello, Red World!"
		--assert #"e" = select s #"r"

	--test-- "series-select-8"
		--assert #"l" = select/last s #"r"

	--test-- "series-select-9"
		--assert #"d" = select/skip s "e" 2

	--test-- "series-select-10"
		--assert none? select s #"!"

===end-group===

===start-group=== "append"
  --test-- "series-append-1"
  --assert 6 = last append [1 2 3 4 5] 6
  --test-- "series-append-2"
  --assert 6 = last append [1 2 3 4] [5 6]
  --assert 4 = fourth append [1 2 3 4] [5 6]
  --assert 5 = fifth append [1 2 3 4] [5 6]
  --test-- "series-append-3"
  --assert 55 = last append "12345" "67"
  --test-- "series-append-4"
  --assert 233 = last append "abcde" "é" ;; utf-8 C3 A9
  --test-- "series-append-5"
  --assert 49 = last append "abcdeé" "1" ;; utf-8 C3 A9
  --test-- "series-append-6"
  --assert 10000 = last append "abcde" "✐"
  --test-- "series-append-7"
  --assert 48 = last append "abcde^(2710)" "0"
  --test-- "series-append-8"
  --assert 10000 = last append "abcdeé" "^(2710)"
  --test-- "series-append-9"
  --assert 233 = last append "abcde^(2710)" "é"
  --test-- "series-append-10"
  --assert 65536 = last append "abcde" "^(010000)"
  --test-- "series-append-11"
  --assert 48 = last append "abcde^(010000)" "0"
  --test-- "series-append-12"
  --assert 65536 = last append "abcde^(2710)é" "^(010000)"

  --test-- "series-append-13"
	blk: make block! 1
	append blk 'x/y
	append/only blk  'r/s
	--assert "[x y r/s]" = mold blk

  --test-- "series-append-14"
	blk: [1 2]
	append/dup/part blk [4 5 6] 3 2
	--assert "[1 2 4 5 4 5 4 5]" = mold blk

  --test-- "series-append-15"
	blk: [1 2]
	append/dup/part blk [4 5 6] 2 3
	--assert "[1 2 4 5 6 4 5 6]" = mold blk

  --test-- "series-append-16"
	str: "12"
	append/dup/part str "456" 3 2
	--assert str = "12454545"

  --test-- "series-append-17"
	str: "12"
	append/part/dup str "456" 3 2
	--assert str = "12456456"

===end-group===

===start-group=== "series-equal"

  --test-- "series-equal-1"
  --assert [] = []

  --test-- "series-equal-2"
    se2-b: []
  --assert [] = se2-b

  --test-- "series-equal-3"
    se3-b: []
  --assert se3-b = []

  --test-- "series-equal-4"
    se4-b: [1]
  --assert se4-b = [1]

  --test-- "series-equal-5"
    se5-b: ["abcde"]
  --assert se5-b = ["abcde"]

===end-group===

===start-group=== "series-find"

  --test-- "series-find-1"
  --assert 3 = first find [1 2 3 4 5] 3

  --test-- "series-find-2"
  --assert 'a = first find [a b c d e] 'a

  --test-- "series-find-3"
  --assert 'e = first find [a b c d e] 'e

  --test-- "series-find-4"
  --assert none = find [] 'a

  --test-- "series-find-5"
  --assert none = find [1 2 3 4] 'a

  --test-- "series-find-6"
  --assert none = find next [a b c d e] 'a

  --test-- "series-find-7"
  --assert 51 = first find "12345" "3"

  --test-- "series-find-8"
  --assert 51 = first find "12345" "^(33)"

  --test-- "series-find-9"
  --assert 51 = first find "12345" first "^(33)"

  --test-- "series-find-10"
  --assert 51 = first find "12345" #"3"

  --test-- "series-find-11"
  --assert 51 = first find "12345" #"^(33)"

  --test-- "series-find-12"
  --assert #"3" = first find "12345" #"3"

  --test-- "series-find-13"
  --assert #"a" = first find "abcdefghijklmno" #"a"

  --test-- "series-find-14"
  --assert "ghijklmno" = find "abcdefghijklmno" "ghij"

  --test-- "series-find-15"
  --assert #"o" = first find "abcdefghijklmno" #"o"

  --test-- "series-find-16"
  --assert "o" = find "abcdefghijklmno" #"o"

  --test-- "series-find-17"
  --assert #"o" = first find "abcdefghijklmno" "o"

  --test-- "series-find-18"
  --assert "o" = find "abcdefghijklmno" "o"

  --test-- "series-find-19"
  --assert none = find "" #"a"

  --test-- "series-find-20"
  --assert none = find "" #"^(00)"

  --test-- "series-find-21"
  --assert none = find "" ""

  --test-- "series-find-22"
  --assert "^(00)" = find "^(00)" "^(00)"

  --test-- "series-find-23"
  --assert "a^(00)" = find "a^(00)" "a^(00)"

  --test-- "series-find-24"
  --assert "^(00)a" = find "^(00)a" "^(00)a"

  --test-- "series-find-25"
  --assert "^(00)" = find "^(00)" #"^(00)"

  --test-- "series-find-26"
  --assert #"^(00)" = first find "^(00)" #"^(00)"

  --test-- "series-find-27"
  --assert #"é" = first find "abcdeé" #"é"

  --test-- "series-find-28"
  --assert "é" = find "abcdeé" "é"

  --test-- "series-find-29"
  --assert "é" = find append "abcde" "é" "é"

  --test-- "series-find-30"
  --assert 10000 = first find "abcde✐" "✐"

  --test-- "series-find-30a"
  --assert 10000 = first find "abcde✐" #"✐"

  --test-- "series-find-31"
  --assert none = find "012345" 48

  --test-- "series-find-32"
  --assert "^(010000)" = find "abcde^(2710)é^(010000)" "^(010000)"

  --test-- "series-find-33"
  --assert "^(010000)cde^(2710)é" = find "ab^(010000)cde^(2710)é" #"^(010000)"

  --test-- "series-find-34"
  --assert "^(010000)cde^(2710)é" = find "ab^(010000)cde^(2710)é" "^(010000)"

	--test-- "series-find-35"
		a: [2 3 5 test #"A" a/b 5 "tesT"]
		append a datatype!
		--assert 3 = index? find a 5

	--test-- "series-find-36"
		--assert 8 = index? find a "test"

	--test-- "series-find-37"
		--assert none? find a 99

	--test-- "series-find-38"
		--assert none? find/skip a 'test 2

	--test-- "series-find-39"
		--assert 4 = index? find/skip a 'test 3

	--test-- "series-find-40"
		--assert 7 = index? find/last a 5

	--test-- "series-find-41"
		--assert 2 = index? find/reverse skip a 4 3

	--test-- "series-find-42"
		--assert 8 = index? find skip a 3 "test"

	--test-- "series-find-43"
		--assert none? find/last/part a 3 1

	--test-- "series-find-44"
		--assert 2 = index? find/last/part a 3 2

	--test-- "series-find-45"
		--assert none? find/part a 'test 3

	--test-- "series-find-46"
		--assert 4 = index? find/part a 'test 4

	--test-- "series-find-47"
		--assert 2 = index? find a [3 5]

	--test-- "series-find-48"
		--assert 3 = index? find a [5 'test]

	--test-- "series-find-49"
		--assert none? find a 'a/b

	--test-- "series-find-50"
		--assert 6 = index? find/only a 'a/b

	--test-- "series-find-51"
		--assert 2 = index? find/match a 2

	--test-- "series-find-52"
		--assert none? find/match a 3

	--test-- "series-find-53"
		--assert 4 = index? find/match a [2 3 5]

	--test-- "series-find-54"
		--assert none? find/match next a [2 3 5]

	--test-- "series-find-55"
		--assert 4 = index? find/tail a 5

	--test-- "series-find-56"
		--assert 3 = index? find 'a/b/3/d 3

	--test-- "series-find-57"
		--assert 2 = index? find 'a/b/3/d 'b

	--test-- "series-find-58"
		s: "Hello, Red World!"
		--assert 6 = index? find s ","

	--test-- "series-find-59"
		--assert 8 = index? find s "Red"

	--test-- "series-find-60"
		--assert 8 = index? find s "red"

	--test-- "series-find-61"
		--assert 6 = index? find s #","

	--test-- "series-find-62"
		--assert 1 = index? find "^(00)" "^(00)"

	--test-- "series-find-63"
		--assert 5 = index? find/skip s #"o" 2

	--test-- "series-find-64"
		--assert 13 = index? find/skip s #"o" 3

	--test-- "series-find-65"
		--assert 15 = index? find/last s #"l"

	--test-- "series-find-66"
		--assert 13 = index? find/last s "o"

	--test-- "series-find-67"
		--assert none? find/part s #"o" 4

	--test-- "series-find-68"
		--assert 5 = index? find/part s #"o" 5

	--test-- "series-find-69"
		--assert 2 = index? find/match s #"h"

	--test-- "series-find-70"
		--assert 5 = index? find/match s "hell"

	--test-- "series-find-71"
		--assert 5 = index? find/match s "Hell"

	--test-- "series-find-72"
		--assert none? find/match/case s "hell"

	--test-- "series-find-73"
		--assert 5 = index? find/match/case s "Hell"

	--test-- "series-find-74"
		--assert none? find/match next s "hell"

	--test-- "series-find-75"
		--assert 8 = index? find/case s "Red"

===end-group===

===start-group=== "remove"

	--test-- "remove-blk-1"
		a: [1 2 3]
		--assert [2 3] = remove a
		--assert [2 3] = a

	--test-- "remove-blk-2"
		a: [1 2 3]
		--assert [3] = remove next a
		--assert [1 3] = a

	--test-- "remove-blk-3"
		--assert tail? head remove []

	--test-- "remove-blk-4"
		a: [1 2 3]
		--assert [3] = remove/part a 2
		--assert [3] = a

	--test-- "remove-blk-5"
		a: [1 2 3]
		--assert [1 2 3] = remove/part a a

	--test-- "remove-blk-6"
		a: [1 2 3]
		--assert [2 3] = remove/part a next a
		--assert [2 3] = a

	--test-- "remove-blk-7"
		a: [1 2 3]
		--assert [1 2 3] =  remove/part a 0

	--test-- "remove-str-1"
		a: "123"
		--assert "23" = remove a
		--assert "23" = a

	--test-- "remove-str-2"
		a: "123"
		--assert "3" = remove next a
		--assert "13" = a

	--test-- "remove-str-3"
		--assert tail? head remove ""

	--test-- "remove-str-4"
		a: "123"
		--assert "3" = remove/part a 2
		--assert "3" = a

	--test-- "remove-str-5"
		a: "123"
		--assert "123" = remove/part a a

	--test-- "remove-str-6"
		a: "123"
		--assert "23"= remove/part a next a
		--assert "23" = a

	--test-- "remove-str-7"
		a: "123"
		--assert "123" = remove/part a 0

	--test-- "remove-str-8"
		a: "str123"
		--assert "" = remove back tail a
		--assert "str12" = head a

===end-group===

===start-group=== "clear"

	--test-- "clear-1"
		c1-b: [1 2 3 4 5]
	--assert [] = clear c1-b

	--test-- "clear-2"
		c2-s: "a"
	--assert "" = clear c2-s

	--test-- "clear-3"
		c3-s: "é"
	--assert "" = clear c2-s

	--test-- "clear-4"
		c4-s: "✐"
	--assert "" = clear c4-s

	--test-- "clear-5"
		c5-s: "^(2710)"
	--assert "" = clear c5-s

	--test-- "clear-6"
		c6-b: [a [b] c]
		clear second c6-b
	--assert [a [] c] = c6-b

	--test-- "clear-7"
		c7-b: [a b c d e f]
		c7-b: next next next c7-b
	--assert [a b c] = head clear c7-b

	--test-- "clear-8"
		c8-b: "123^(2710)"
		c8-b: next next next c8-b
	--assert "123" = head clear c8-b

	--test-- "clear-9"
		c9-b: "^(2710)123"
		c9-b:  next c9-b
		--assert "^(2710)" = head clear c9-b

===end-group===

===start-group=== "at"

	--test-- "at-1 #issue 501"
		--assert "c" = at tail "abc" -1
		--assert "" = at tail "abc" 0

	--test-- "at-2"
		--assert "bcde" = at "abcde" 2
		--assert "abcde" = at "abcde" 1
		--assert "abcde" = at "abcde" 0
		--assert "abcde" = at "abcde" -1
		--assert "abcde" = at "abcde" -256
		--assert "e" = at "abcde" 5
		--assert "" = at "abcde" 6
		--assert "" = at "abcde" 1028

	--test-- "at-3"
		--assert [b c d e] = at [a b c d e] 2
		--assert [a b c d e] = at [a b c d e] 1
		--assert [a b c d e] = at [a b c d e] 0
		--assert [a b c d e] = at [a b c d e] -1
		--assert [a b c d e] = at [a b c d e] -256
		--assert [e] = at [a b c d e] 5
		--assert [] = at [a b c d e] 6
		--assert [] = at [a b c d e] 1028

===end-group===

===start-group=== "replace"

	--test-- "replace-block-1-issue-#667"
		code: [print "Hello"]
		--assert 'print = first replace code "Hello" "Cheers"
		--assert "Cheers" = second code

===end-group===

===start-group=== "max/min"			;-- have some overlap with lesser tests

	--test-- "max1"
		--assert "abe"  = max "abc" "abe"
		--assert "abcd" = max "abc" "abcd"

	--test-- "min1"
		--assert ""		= min "" 	"abcdef"
		--assert "abc"	= min "abc" "abcd"

	--test-- "max2"					;@@ need to add tests for word!, path!
		blk1: [1 1.0 #"a" "ab" %ab/cd [] [2] (1 2)]
		blk2: [1 1.0 #"a" "ab" %ab/cd [] [2] (1 3)]
		--assert blk2 = max blk1 blk2
		blk1: next blk1
		--assert blk2 = max blk1 blk2

===end-group===

===start-group=== "reverse"

	--test-- "reverse-str-1"			;-- 4 bytes code point
		--assert "dc𠃌21ba" = reverse "ab12𠃌cd"	;--  = #"^(E818)"
                                                    	;-- 𠃌 = #"^(200CC)"
	--test-- "reverse-str-2"			;-- 2 bytes code point
		--assert "dc21ba" = reverse "ab12cd"

	--test-- "reverse-str-3"			;-- 1 bytes code point
		--assert "dc21ba" = reverse "ab12cd"

	--test-- "reverse-str-4"
		--assert "1ba2𠃌cd" = reverse/part "ab12𠃌cd" 4

	--test-- "reverse-str-5"
		s: "abcdef"
		p: next next next s
		--assert "cbadef" = reverse/part s p

	--test-- "reverse-file-1"			;-- inherit from string!
		--assert %321cba = reverse/part %abc123 6

	--test-- "reverse-blk-1"
		--assert [a b c d] = reverse [d c b a]

	--test-- "reverse-blk-2"
		--assert [c b [a] d] = reverse/part [[a] b c d] 3

	--test-- "reverse-blk-3"
		blk: [1 [2] a b c ]
		p: next next next blk
		--assert [a [2] 1 b c] = reverse/part blk p

	--test-- "reverse-path-1"			;-- inherit from block!
		p1: first [ab/cd/ef]
		p2: first [ef/cd/ab]
		--assert p2 = reverse p1

===end-group===

===start-group=== "take"

	--test-- "take-blk-1"
		a: [1 2 3]
		--assert 1 = take a
		--assert [2 3] = a

	--test-- "take-blk-2"
		a: [1 2 3]
		--assert 3 = take/last a
		--assert [1 2] = a

	--test-- "take-blk-3"
		a: [1 2 3]
		--assert 2 = take next a
		--assert [1 3] = a

	--test-- "take-blk-4"
		--assert none = take []

	--test-- "take-blk-5"
		a: [1 2 3]
		--assert [1 2] = take/part a 2
		--assert [3] = a

	--test-- "take-blk-6"
		a: [1 2 3]
		--assert 1 = take/part a next a
		--assert [2 3] = a

	--test-- "take-blk-7"
		a: [1 2 3]
		--assert [2 3] = take/part/last a next a
		--assert [1] = a

	--test-- "take-blk-8"
		a: [1 2 3]
		--assert [] = take/part a 0
		--assert [1 2 3] = a

	--test-- "take-blk-9"
		b: "abc"
		a: reduce [b 2 3]
		--assert b = c: take/deep a
		--assert b <> remove c

	--test-- "take-blk-5"
		a: [1 2 3]
		--assert [1 2 3] = take/part a 22
		--assert [] = a

	--test-- "take-str-1"
		a: "123"
		--assert #"1" = take a
		--assert "23" = a

	--test-- "take-str-2"
		a: "123"
		--assert #"3" = take/last a
		--assert "12" = a

	--test-- "take-str-3"
		a: "123"
		--assert #"2" = take next a
		--assert "13" = a

	--test-- "take-str-4"
		--assert none = take ""

	--test-- "take-str-5"
		a: "123"
		--assert "12" = take/part a 2
		--assert "3" = a

	--test-- "take-str-6"
		a: "123"
		--assert "23" = take/part/last a 2
		--assert "1" = a

	--test-- "take-str-7"
		a: "123"
		--assert "" = take/part a a
		--assert "123" = a

	--test-- "take-str-8"
		a: "123"
		--assert #"1"= take/part a next a
		--assert "23" = a

	--test-- "take-str-9"
		a: "123"
		--assert "23" = take/part/last a next a
		--assert "1"  = a

	--test-- "take-str-10"
		a: "123"
		--assert "123" = take/part a 22
		--assert "" = a
===end-group===

===start-group=== "swap"

	--test-- "swap-str-1"			;-- 4 bytes code point
		a: "1234"
		b: "𠃌"						;-- 𠃌 = #"^(200CC)"
		--assert "𠃌234" = swap a b
		--assert "𠃌234" = a
		--assert "1"	 = b

	--test-- "swap-str-2"			;-- 2 bytes code point
		a: "1234"
		b: "ab"					;--  = #"^(E818)"
		--assert "234" = swap a next b
		--assert "234" = a
		--assert "a1b"	 = b

	--test-- "swap-str-3"			;-- 1 bytes code point
		--assert "a234" = swap "1234" "abc"

	--test-- "swap-str-4"
		--assert "123" = swap "123" ""

	--test-- "swap-blk-1"
		a: [1 2]
		b: [a b]
		--assert [a 2] = swap a b
		--assert [a 2] = a
		--assert [1 b] = b

	--test-- "swap-blk-2"
		a: [1 2]
		b: [a b]
		--assert [a]   = swap next a b
		--assert [1 a] = a
		--assert [2 b] = b

	--test-- "swap-blk-3"
		--assert [1 a] = swap [1 a] []

===end-group===

===start-group=== "trim"

	str: " ^(A0) ^-a b  ^- c  ^(2000) "
	mstr: {   a ^-1^/    ab2^-  ^/  ac3  ^/  ^/^/}

	--test-- "trim-str-1"
		--assert "a b  ^- c" = trim copy str

	--test-- "trim-str-2"
		--assert "a ^-1^/ab2^/ac3^/" = trim copy mstr

	--test-- "trim-str-3"
		--assert "a ^-1^/    ab2^-  ^/  ac3  ^/  ^/^/" = trim/head copy mstr

	--test-- "trim-str-4"
		--assert "   a ^-1^/    ab2^-  ^/  ac3" = trim/tail copy mstr

	--test-- "trim-str-5"
		--assert "a ^-1^/    ab2^-  ^/  ac3" = trim/head/tail copy mstr

	--test-- "trim-str-6"
		--assert "a 1 ab2 ac3" = trim/lines copy mstr

	--test-- "trim-str-7"
		--assert "a1ab2ac3" = trim/all copy mstr

	--test-- "trim-str-8"
		--assert "    ^-1^/    2^-  ^/  c3  ^/  ^/^/" = trim/with copy mstr "ab"

	--test-- "trim-str-9"
		--assert "    ^-1^/    b2^-  ^/  c3  ^/  ^/^/" = trim/with copy mstr #"a"

	--test-- "trim-str-10"
		--assert "    ^-1^/    b2^-  ^/  c3  ^/  ^/^/" = trim/with copy mstr 97

	--test-- "trim-block-1"
		--assert [1 2] = trim [#[none] 1 #[none] 2 #[none]]

===end-group===

===start-group=== "sort"

	--test-- "sort-str-1"			;-- 4 bytes code point
		a: "g4C28c𠃌9A15Hf3iEG076eBIdbFaDh"
		--assert "0123456789AaBbCcdDEefFGghHIi𠃌" = sort a

	--test-- "sort-str-2"			;-- 2 bytes code point
		a: "g4C28c大9A15Hf3iEG076eBIdbFaDh"
		--assert "0123456789AaBbCcdDEefFGghHIi大" = sort a

	--test-- "sort-str-3"			;-- 1 bytes code point
		a: "g4C28c9A15Hf3iEG076eBIdbFaDh"
		--assert "0123456789AaBbCcdDEefFGghHIi" = sort a
		--assert "0123456789ABCDEFGHIabcdefghi" = sort/case a
		--assert "ihgfedcbaIHGFEDCBA9876543210" = sort/case/reverse a

	--test-- "sort-str-4"
		a: "4gh2ab1cd3ef"
		--assert "1cd2ab3ef4gh" = sort/skip a 3
		--assert "12abcd3ef4gh" = sort/part a 6
		--assert "34efgh" = sort/part skip a 6 tail a

	--test-- "sort-blk-1"
		a: [bc 799 ab2 42 bb1 321.3 "Mo" "Curly" "Larry" -24 0 321.8]
		--assert ["Curly" "Larry" "Mo" -24 0 42 321.3 321.8 799 ab2 bb1 bc] = sort a
		--assert [bc bb1 ab2 799 321.8 321.3 42 0 -24 "Mo" "Larry" "Curly"] = sort/reverse a

	--test-- "sort-blk-2"
		a: ["Larry" 45 "Curly" 50 "Mo" 42]
		--assert ["Curly" 50 "Larry" 45 "Mo" 42] = sort/skip a 2
		--assert ["Curly" "Larry" 45 50 "Mo" 42] = sort/part a 4
		--assert ["Mo" 42 45 50] = sort/part skip a 2 tail a

	--test-- "sort-blk-3"
		a: ["Larry" 45 "Curly" 50 "Mo" 42]
		--assert ["Mo" 42 "Larry" 45 "Curly" 50] = sort/skip/compare a 2 2
		--assert ["Mo" 42 "Larry" 45 "Curly" 50] = sort/skip/compare a 2 func [a b][a > b]
		--assert ["Curly" 50 "Larry" 45 "Mo" 42] = sort/skip/compare/all a 2 func [a b][a/2 > b/2]

	--test-- "sort-blk-4"
		o1: context [a: 2 i: "a"]
		o2: context [a: 1 i: "b"]
		o3: context [a: 1 i: "c"]
		o4: context [a: 1 i: "d"]
		o5: context [a: 1 i: "e"]
		o6: context [a: 1 i: "f"]
		o7: context [a: 3 i: "g"]
		o8: context [a: 3 i: "h"]
		a: reduce [o1 o2 o3 o8 o4 o5 o6 o7]
		res: reduce [o2 o3 o4 o5 o6 o1 o8 o7]
		--assert res = sort/compare/stable a func [a b][a/a - b/a]
===end-group===

~~~end-file~~~


TESTS: added a couple of tests of the /extern refinement of the 'FUNCTION function

Red [
	Title:   "Red function test script"
	Author:  "Nenad Rakocevic & Peter W A Wood"
	File: 	 %function-test.reds
	Tabs:	 4
	Rights:  "Copyright (C) 2011-2012 Nenad Rakocevic & Peter W A Wood. All rights reserved."
	License: "BSD-3 - https://github.com/dockimbel/Red/blob/origin/BSD-3-License.txt"
]

#include  %../../../quick-test/quick-test.red

~~~start-file~~~ "function"

===start-group=== "Basic function tests"

	--test-- "fun-1"
		foo1: func [][1]
		--assert 1 = foo1

	--test-- "fun-2"
		foo2: func [a][a]
		--assert 5 = foo2 5
		--assert "a" = foo2 "a"
		--assert [123] = foo2 [123]

	--test-- "fun-3"
		foo3: func [a /local c][c: 1 a + c]
		--assert 3 = foo3 2

	--test-- "fun-4"
		foo4: func [a /ref][either ref [a][0]]
		--assert 0 = foo4 5
		--assert 5 = foo4/ref 5

	--test-- "fun-5"
		foo5: func [a /ref b][if ref [a: a + b] a * 2]
		--assert 10 = foo5 5
		--assert 16 = foo5/ref 5 3

	--test-- "fun-6"
		z: 10
		foo6: func [a [integer!] b [integer!] /ref d /local c][
			c: 2
			unless ref [d: 0]
			a + b * c + z + d
		]

		--assert 16 = foo6 1 2
		--assert 21 = foo6/ref 1 2 5

	--test-- "fun-7"
		bar:  func [] [foo7]
		foo7: func [] [42]
		--assert 42 = bar

	--test-- "fun-8"
		foo8: func ['a :b][
			--assert a = 'test
			--assert "(1 + 2)" = mold b
		]
		foo8 test (1 + 2)

	--test-- "fun-9"
		foo9: func [/local cnt][
			cnt: [0]
			cnt/1: cnt/1 + 1
		]
		--assert 1 = foo9
		--assert 2 = foo9
		--assert 3 = foo9

	--test-- "fun-10"
		foo10: func [a][a + 0]
		foo10: func [][1]
		--assert 1 = foo10 "dummy"						;-- make it crash if wrong function referenced

	--test-- "fun-11"
		non-evaluated: func ['param] [param]
		res: first [(1 + 2)]
		--assert quote (1 + 2) = res
		--assert non-evaluated (quote (1 + 2)) = res
		--assert non-evaluated quote (1 + 2) = 3

===end-group===

===start-group=== "Alternate constructor tests"

	--test-- "fun-alt-1"
		z: 0
		alt1: function [a][
			z: 2
			a + z
		]
		--assert 10 = alt1 8
		--assert z = 0

	--test-- "fun-alt-2"
		alt2: does [123]
		--assert 123 = alt2

	--test-- "fun-alt-3"
		alt3: has [c][c: 1 c]
		--assert 1 = alt3

===end-group===

===start-group=== "Exit and Return tests"

	--test-- "fun-exit-1"
		ex1: does [123 exit 0]
		--assert unset! = type? ex1

	--test-- "fun-exit-2"
		ex2: does [if true [exit] 0]
		--assert unset! = type? ex2

	--test-- "fun-exit-3"
		ex3: does [until [if true [if true [exit]] true] 0]
		--assert unset! = type? ex3

	--test-- "fun-ret-1"
		ret1: does [return true]
		--assert ret1

	--test-- "fun-ret-2"
		ret2: does [return 123]
		--assert 123 = ret2

	--test-- "fun-ret-3"
		ret3: does [if true [return 3]]
		--assert 3 = ret3

	--test-- "fun-ret-4"
		ret4: does [return 1 + 1]
		--assert 2 = ret4

	--test-- "fun-ret-5"
		ret5: does [return either false [12][34]]
		--assert 34 = ret5

	--test-- "fun-ret-6"								;-- issue #770
		ret6: func [i [integer!]][
			until [
				if true [
					if i = 0 [
						if true [return 0]
						return 1
					]
					return 2
				]
				return 3
				true
			]
		]
		--assert 0 = ret6 0
		--assert 2 = ret6 1

	--test-- "fun-ret-7"
		f: function [][
			blk: [1 2 3 4 5]
			foreach i blk [
				case [
					i > 1 [return i]
				]
			]
		]
		g: function [][if f [return 1]]
		--assert g = 1

	--test-- "fun-ret-8"
		f: function [][
		    case [
		        2 > 1 [return true]
		    ]
		]
		g: function [][if f [return 1]]
		--assert g = 1

	--test-- "fun-ret-9"
		f: function [][if true [return true]]
		g: function [][if f [return 1]]
		--assert g = 1

	--test-- "fun-ret-10"
		g: function [][if true [return 1]]
		--assert g = 1

	--test-- "fun-ret-10"
		f: function [][true]
		g: function [][if f [return 1]]
		--assert g = 1

	--test-- "fun-ret-11"
		f: function [][if true [return true]]
		g: function [][if (f) [return 1]]
		--assert g = 1

	--test-- "fun-ret-12"
		f: function [][if true [return true] ]
		g: function [][if not not f [return 1]]
		--assert g = 1

	--test-- "fun-ret-13"
		f: function [][if true [return 'X]]
		g: function [][if f [return 1]]
		--assert g = 1

	--test-- "fun-ret-14"								;-- issue #778
	 	--assert 1 = do load "f: func [][return 1] t: f"

===end-group===

===start-group=== "Reflection"
	clean-strings: func [blk [block!]][
		blk: copy blk
		forall blk [if string? blk/1 [remove blk blk: back blk]]
		blk
	]

	--test-- "fun-ref-1"
		ref1: func [a b][a + b]
		--assert [a b] = spec-of :ref1
		body: body-of :ref1
		--assert any [
			[a + b] = body
			none? body									;-- if option store-bodies = no
		]

	--test-- "fun-ref-2"
		blk: clean-strings spec-of :append
		--assert blk = [
			series [series!] value [any-type!] /part length [number! series!]
			/only /dup count [number!] return: [series!]
		]

	--test-- "fun-ref-3"
		blk: clean-strings spec-of :set
		--assert blk = [word [any-word! block!] value [any-type!] /any return: [any-type!]]

	--test-- "fun-ref-4"
		blk: clean-strings spec-of :<
		--assert blk = [value1 [any-type!] value2 [any-type!]]

===end-group===

===start-group=== "Capturing of iterators counter word(s)"

	--test-- "fun-capt-1"
		f1: function [] [repeat ii 5 [ii]]
		--assert none <> find spec-of :f1 'ii
		f1
		--assert unset? get/any 'ii

	--test-- "fun-capt-2"
		f2: function [] [foreach ii [1 2 3] [ii]]
		--assert none <> find spec-of :f2 'ii
		f2
		--assert unset? get/any 'ii

	--test-- "fun-capt-3"
		f3: function [] [foreach [ii jj] [1 2 3 4] [ii jj]]
		--assert none <> find spec-of :f3 'ii
		--assert none <> find spec-of :f3 'jj
		f3
		--assert unset? get/any 'ii
		--assert unset? get/any 'jj

===end-group===

===start-group=== "Reported issues"
  	--test-- "ri1 issue #415"
    	i415-f: func [] [
    		g: func [] [1]
    		g
    	]
    --assert 1 = i415-f

  	--test-- "ri2 issue #461"
  		ri2-fn: func ['word] [:word]
  	--assert op? ri2-fn :+

  	--test-- "ri3 issue #461"
  		ri3-fn: func ['word] [mold :word]
  	--assert "'+" = ri3-fn '+

  	--test-- "ri4 issue #461"
  		ri4-fn: func ['word] [mold :word]
  	--assert "+" = ri4-fn +

  	;--test-- "ri5 issue #420"
  	;	ri5-fn: function [][
  	;		g: func [] [true]
  	;		g
  	;	]
  	;--assert ri5-fn

  	;--test-- "ri6 issue #420"
  	;	ri6-fn: func [
  	;		/local
  	;			g
  	;	][
  	;		g: func [] [true]
  	;		g
  	;	]
  	;--assert ri6-fn

  	;--test-- "ri7 issue #420"
  	;	ri7-g: func [][true]
  	;	ri7-f: func [][g]
  	;--assert ri7-f

  	--test-- "ri8 issue #443"
  		ri8-fn: func[
  			/local
  				ri8-b
  				ri8-i
  				ri8-j
  		][
  			ri8-b: copy []
  			foreach [ri8-i ri8-j] [1 2 3 4] [append ri8-b ri8-i * ri8-j]
  			ri8-b
  		]
  		ri8-i: 100
  		ri8-j: 200
  	--assert [2 12] = ri8-fn
  	--assert 100 = ri8-i
  	--assert 200 = ri8-j

  	--test-- "ri9 issue #443"
  		ri9-i: -1
  		ri9-j: -2
  		ri9-fn: function[][
  			ri9-b: copy []
  			foreach [ri9-i ri9-j] [1 2 3 4] [append ri9-b ri9-i * ri9-j]
  			ri9-b
  		]
  	--assert [2 12] = ri9-fn
  	--assert ri9-i = -1
  	--assert ri9-j = -2
  	;--assert unset! = type? get 'ri9-i		;-- temporary disabled to avoid the hardcoded error msg
  	;--assert unset! = type? get 'ri9-j

===end-group===

===start-group=== "Infix operators creation"

	--test-- "infix-1"
		infix: function [a b][a * 10 + b]
		***: make op! :infix
		--assert 7 *** 3 = 73

		infix2: routine [a [integer!] b [integer!]][integer/box a * 20 + b]

	unless system/interpreted? [			;-- routine creation not supported by interpreter
		--test-- "infix-2"
				*+*: make op! :infix2
			--assert 5 *+* 6 = 106

		--test-- "infix-3"
			--assert 5 *+* 6 *** 7 = 1067
	]

===end-group===

===start-group=== "Scope of Varibles"

	--test-- "scope1 issue #825"
		s1-text: "abcde"
		s1-f: function [/extern s1-text] [
			s1-text
		]
		--assert s1-f = "abcde"

	--test-- "scope2 issue #825"
		s2-f: function [/extern s2-text] [
			s2-text
		]
		s2-text: "abcde"
		--assert s2-f = "abcde"

	--test-- "scope3 issue #825"
		s3-text: "abcde"
		s3-f: func [/local s3-text] [
			s3-text: "12345"
		]

	--test-- "scope4 issue #825"
		s4-text: "abcde"
		s4-f: function [extern s4-text] [
			if extern [s4-text: "12345"]
			s4-text
		]
		--assert "12345" = s4-f true "00000"

	--test-- "scope5 issue #825"
		s5-text: "abcde"
		s5-f: func[/extern s5-text] [
			either extern [
				s5-text
			][
				"00000"
			]
		]
		--assert "12345" s5-f/extern "12345"

	--test-- "scope6 issue #825"
		s6-text: "abcde"
		s6-f: func [local s6-text] [
			s6-text
		]
		--assert "12345" = s6-f "filler" "12345"

	--test-- "scope7 issue #825"
		s7-text: "abcde"
		s7-f: function [local s7-text] [
			s7-text
		]
		--assert "12345" = s7-f "filler" "12345"

===end-group===

===start-group=== "functionfunction"
comment {                                       ####################################
    --test-- "funfun1"
        ff1-i: 1
        ff1-f: function [][ff1-i: 2 f: func[][ff1-i] f]
        --assert 2 = ff1-f
                                                #################################### }

    --test-- "funfun2"
        ff2-i: 1
        ff2-f: function [][ff2-i: 2 ff2-i]
        ff2-r: ff2-f
        --assert 1 = ff2-i
        --assert 2 = ff2-r

    --test-- "funfun3"
        ff3-i: 1
        ff3-f: function [][
            ff3-i: 2
            o: make object! [
                ff3-i: 3
            ]
            o/ff3-i
        ]
        --assert 3 = ff3-f

    --test-- "funfun4"
        ff4-i: 1
        ff4-f: function [][
            ff4-i: 2
            o: make object! [
                ff4-i: 3
            ]
            ff4-i
        ]
        --assert 2 = ff4-f

    --test-- "funfun5 #964"
        ff5-f: function [] [
            either true [
                ff5-x
             ][
                ff5-x: 0
            ]
        ]
        --assert none = ff5-f

    --test-- "funfun6 #964"
        ff6-f: function [] [
            either false [
                ff6-x
             ][
                ff6-x: 0
            ]
        ]
        --assert 0 = ff6-f

    --test-- "funfun7"
        ff7-f: function [] [
            a: 1
            b: make object! [c: 2]
            c
        ]
        --assert none = ff7-f

     --test-- "funfun8"
        ff8-i: 1
        ff8-f: function [] [
            a: 1
            b: make object! [ff8-i: 2]
            ff8-i
        ]
        --assert none = ff8-f

     --test-- "funfun9"
        ff9-f: function [] [
            a: 1
            b: function [] [c: 2]
            b
            c
        ]
        --assert none = ff9-f

     --test-- "funfun10"
        ff10-i: 1
        ff10-f: function [] [
            a:
            b: function [] [ff10-i: 2]
            b
            ff10-i
        ]
        --assert none = ff10-f

    --test-- "funfun11"
        ff11-i: 1
        ff11-f: function [] [
            ff: func [/local ff11-i][ff11-i: 2]
            ff11-i
        ]
        --assert none = ff11-f
        --assert 1 = ff11-i

    --test-- "funfun12"
        ff12-i: 1
        ff12-f: function [] [
            ff: make object! [ff12-i: 2]
            ff12-i
        ]
        --assert none = ff12-f
        --assert 1 = ff12-i
 comment {                                          ####################################
    --test-- "funfun13"
        ff13-i: 1
        ff13-f: function [/extern ff13-i] [
            ff: func [/local ff13-i][ff13-i: 2]
            ff13-i: 3
        ]
        --assert 3 = ff13-f
        --assert 3 = ff13-i
                                                    ####################################}
    --test-- "funfun14"
        ff14-i: 1
        ff14-f: function [/extern ff14-i] [
            ff: make object! [ff14-i: 2]
            ff14-i: 3
        ]
        --assert 3 = ff14-f
        --assert 3 = ff14-i
 comment {                                          ####################################
    --test-- "funfun15"
        ff15-i: 1
        ff15-f: func [
            /local ff15-i
        ][
            ff15-i: 2
            ff: function [
                /extern ff15-i
            ][
                ff15-i
            ]
            ff
        ]
        --assert 2 = ff15-f
        --assert 1 = ff15-i
                                                    ####################################}

===end-group===

~~~end-file~~~

Red [
	Title:   "Red function test script"
	Author:  "Nenad Rakocevic & Peter W A Wood"
	File: 	 %function-test.reds
	Tabs:	 4
	Rights:  "Copyright (C) 2011-2012 Nenad Rakocevic & Peter W A Wood. All rights reserved."
	License: "BSD-3 - https://github.com/dockimbel/Red/blob/origin/BSD-3-License.txt"
]

#include  %../../../quick-test/quick-test.red

~~~start-file~~~ "function"

===start-group=== "Basic function tests"

	--test-- "fun-1"
		foo1: func [][1]
		--assert 1 = foo1

	--test-- "fun-2"
		foo2: func [a][a]
		--assert 5 = foo2 5
		--assert "a" = foo2 "a"
		--assert [123] = foo2 [123]

	--test-- "fun-3"
		foo3: func [a /local c][c: 1 a + c]
		--assert 3 = foo3 2

	--test-- "fun-4"
		foo4: func [a /ref][either ref [a][0]]
		--assert 0 = foo4 5
		--assert 5 = foo4/ref 5

	--test-- "fun-5"
		foo5: func [a /ref b][if ref [a: a + b] a * 2]
		--assert 10 = foo5 5
		--assert 16 = foo5/ref 5 3

	--test-- "fun-6"
		z: 10
		foo6: func [a [integer!] b [integer!] /ref d /local c][
			c: 2
			unless ref [d: 0]
			a + b * c + z + d
		]

		--assert 16 = foo6 1 2
		--assert 21 = foo6/ref 1 2 5

	--test-- "fun-7"
		bar:  func [] [foo7]
		foo7: func [] [42]
		--assert 42 = bar

	--test-- "fun-8"
		foo8: func ['a :b][
			--assert a = 'test
			--assert "(1 + 2)" = mold b
		]
		foo8 test (1 + 2)

	--test-- "fun-9"
		foo9: func [/local cnt][
			cnt: [0]
			cnt/1: cnt/1 + 1
		]
		--assert 1 = foo9
		--assert 2 = foo9
		--assert 3 = foo9

	--test-- "fun-10"
		foo10: func [a][a + 0]
		foo10: func [][1]
		--assert 1 = foo10 "dummy"						;-- make it crash if wrong function referenced

	--test-- "fun-11"
		non-evaluated: func ['param] [param]
		res: first [(1 + 2)]
		--assert quote (1 + 2) = res
		--assert non-evaluated (quote (1 + 2)) = res
		--assert non-evaluated quote (1 + 2) = 3

===end-group===

===start-group=== "Alternate constructor tests"

	--test-- "fun-alt-1"
		z: 0
		alt1: function [a][
			z: 2
			a + z
		]
		--assert 10 = alt1 8
		--assert z = 0

	--test-- "fun-alt-2"
		alt2: does [123]
		--assert 123 = alt2

	--test-- "fun-alt-3"
		alt3: has [c][c: 1 c]
		--assert 1 = alt3

===end-group===

===start-group=== "Exit and Return tests"

	--test-- "fun-exit-1"
		ex1: does [123 exit 0]
		--assert unset! = type? ex1

	--test-- "fun-exit-2"
		ex2: does [if true [exit] 0]
		--assert unset! = type? ex2

	--test-- "fun-exit-3"
		ex3: does [until [if true [if true [exit]] true] 0]
		--assert unset! = type? ex3

	--test-- "fun-ret-1"
		ret1: does [return true]
		--assert ret1

	--test-- "fun-ret-2"
		ret2: does [return 123]
		--assert 123 = ret2

	--test-- "fun-ret-3"
		ret3: does [if true [return 3]]
		--assert 3 = ret3

	--test-- "fun-ret-4"
		ret4: does [return 1 + 1]
		--assert 2 = ret4

	--test-- "fun-ret-5"
		ret5: does [return either false [12][34]]
		--assert 34 = ret5

	--test-- "fun-ret-6"								;-- issue #770
		ret6: func [i [integer!]][
			until [
				if true [
					if i = 0 [
						if true [return 0]
						return 1
					]
					return 2
				]
				return 3
				true
			]
		]
		--assert 0 = ret6 0
		--assert 2 = ret6 1

	--test-- "fun-ret-7"
		f: function [][
			blk: [1 2 3 4 5]
			foreach i blk [
				case [
					i > 1 [return i]
				]
			]
		]
		g: function [][if f [return 1]]
		--assert g = 1

	--test-- "fun-ret-8"
		f: function [][
		    case [
		        2 > 1 [return true]
		    ]
		]
		g: function [][if f [return 1]]
		--assert g = 1

	--test-- "fun-ret-9"
		f: function [][if true [return true]]
		g: function [][if f [return 1]]
		--assert g = 1

	--test-- "fun-ret-10"
		g: function [][if true [return 1]]
		--assert g = 1

	--test-- "fun-ret-10"
		f: function [][true]
		g: function [][if f [return 1]]
		--assert g = 1

	--test-- "fun-ret-11"
		f: function [][if true [return true]]
		g: function [][if (f) [return 1]]
		--assert g = 1

	--test-- "fun-ret-12"
		f: function [][if true [return true] ]
		g: function [][if not not f [return 1]]
		--assert g = 1

	--test-- "fun-ret-13"
		f: function [][if true [return 'X]]
		g: function [][if f [return 1]]
		--assert g = 1

	--test-- "fun-ret-14"								;-- issue #778
	 	--assert 1 = do load "f: func [][return 1] t: f"

===end-group===

===start-group=== "Reflection"
	clean-strings: func [blk [block!]][
		blk: copy blk
		forall blk [if string? blk/1 [remove blk blk: back blk]]
		blk
	]

	--test-- "fun-ref-1"
		ref1: func [a b][a + b]
		--assert [a b] = spec-of :ref1
		body: body-of :ref1
		--assert any [
			[a + b] = body
			none? body									;-- if option store-bodies = no
		]

	--test-- "fun-ref-2"
		blk: clean-strings spec-of :append
		--assert blk = [
			series [series!] value [any-type!] /part length [number! series!]
			/only /dup count [number!] return: [series!]
		]

	--test-- "fun-ref-3"
		blk: clean-strings spec-of :set
		--assert blk = [word [any-word! block!] value [any-type!] /any return: [any-type!]]

	--test-- "fun-ref-4"
		blk: clean-strings spec-of :<
		--assert blk = [value1 [any-type!] value2 [any-type!]]

===end-group===

===start-group=== "Capturing of iterators counter word(s)"

	--test-- "fun-capt-1"
		f1: function [] [repeat ii 5 [ii]]
		--assert none <> find spec-of :f1 'ii
		f1
		--assert unset? get/any 'ii

	--test-- "fun-capt-2"
		f2: function [] [foreach ii [1 2 3] [ii]]
		--assert none <> find spec-of :f2 'ii
		f2
		--assert unset? get/any 'ii

	--test-- "fun-capt-3"
		f3: function [] [foreach [ii jj] [1 2 3 4] [ii jj]]
		--assert none <> find spec-of :f3 'ii
		--assert none <> find spec-of :f3 'jj
		f3
		--assert unset? get/any 'ii
		--assert unset? get/any 'jj

===end-group===

===start-group=== "Reported issues"
  	--test-- "ri1 issue #415"
    	i415-f: func [] [
    		g: func [] [1]
    		g
    	]
    --assert 1 = i415-f

  	--test-- "ri2 issue #461"
  		ri2-fn: func ['word] [:word]
  	--assert op? ri2-fn :+

  	--test-- "ri3 issue #461"
  		ri3-fn: func ['word] [mold :word]
  	--assert "'+" = ri3-fn '+

  	--test-- "ri4 issue #461"
  		ri4-fn: func ['word] [mold :word]
  	--assert "+" = ri4-fn +

  	;--test-- "ri5 issue #420"
  	;	ri5-fn: function [][
  	;		g: func [] [true]
  	;		g
  	;	]
  	;--assert ri5-fn

  	;--test-- "ri6 issue #420"
  	;	ri6-fn: func [
  	;		/local
  	;			g
  	;	][
  	;		g: func [] [true]
  	;		g
  	;	]
  	;--assert ri6-fn

  	;--test-- "ri7 issue #420"
  	;	ri7-g: func [][true]
  	;	ri7-f: func [][g]
  	;--assert ri7-f

  	--test-- "ri8 issue #443"
  		ri8-fn: func[
  			/local
  				ri8-b
  				ri8-i
  				ri8-j
  		][
  			ri8-b: copy []
  			foreach [ri8-i ri8-j] [1 2 3 4] [append ri8-b ri8-i * ri8-j]
  			ri8-b
  		]
  		ri8-i: 100
  		ri8-j: 200
  	--assert [2 12] = ri8-fn
  	--assert 100 = ri8-i
  	--assert 200 = ri8-j

  	--test-- "ri9 issue #443"
  		ri9-i: -1
  		ri9-j: -2
  		ri9-fn: function[][
  			ri9-b: copy []
  			foreach [ri9-i ri9-j] [1 2 3 4] [append ri9-b ri9-i * ri9-j]
  			ri9-b
  		]
  	--assert [2 12] = ri9-fn
  	--assert ri9-i = -1
  	--assert ri9-j = -2
  	;--assert unset! = type? get 'ri9-i		;-- temporary disabled to avoid the hardcoded error msg
  	;--assert unset! = type? get 'ri9-j

===end-group===

===start-group=== "Infix operators creation"

	--test-- "infix-1"
		infix: function [a b][a * 10 + b]
		***: make op! :infix
		--assert 7 *** 3 = 73

		infix2: routine [a [integer!] b [integer!]][integer/box a * 20 + b]

	unless system/interpreted? [			;-- routine creation not supported by interpreter
		--test-- "infix-2"
				*+*: make op! :infix2
			--assert 5 *+* 6 = 106

		--test-- "infix-3"
			--assert 5 *+* 6 *** 7 = 1067
	]

===end-group===

===start-group=== "Scope of Varibles"

	--test-- "scope1 issue #825"
		s1-text: "abcde"
		s1-f: function [/extern s1-text] [
			s1-text
		]
		--assert s1-f = "abcde"

	--test-- "scope2 issue #825"
		s2-f: function [/extern s2-text] [
			s2-text
		]
		s2-text: "abcde"
		--assert s2-f = "abcde"

	--test-- "scope3 issue #825"
		s3-text: "abcde"
		s3-f: func [/local s3-text] [
			s3-text: "12345"
		]

	--test-- "scope4 issue #825"
		s4-text: "abcde"
		s4-f: function [extern s4-text] [
			if extern [s4-text: "12345"]
			s4-text
		]
		--assert "12345" = s4-f true "00000"

	--test-- "scope5 issue #825"
		s5-text: "abcde"
		s5-f: func[/extern s5-text] [
			either extern [
				s5-text
			][
				"00000"
			]
		]
		--assert "12345" s5-f/extern "12345"

	--test-- "scope6 issue #825"
		s6-text: "abcde"
		s6-f: func [local s6-text] [
			s6-text
		]
		--assert "12345" = s6-f "filler" "12345"

	--test-- "scope7 issue #825"
		s7-text: "abcde"
		s7-f: function [local s7-text] [
			s7-text
		]
		--assert "12345" = s7-f "filler" "12345"

===end-group===

===start-group=== "functionfunction"
comment {                                       ####################################
    --test-- "funfun1"
        ff1-i: 1
        ff1-f: function [][ff1-i: 2 f: func[][ff1-i] f]
        --assert 2 = ff1-f
                                                #################################### }

    --test-- "funfun2"
        ff2-i: 1
        ff2-f: function [][ff2-i: 2 ff2-i]
        ff2-r: ff2-f
        --assert 1 = ff2-i
        --assert 2 = ff2-r

    --test-- "funfun3"
        ff3-i: 1
        ff3-f: function [][
            ff3-i: 2
            o: make object! [
                ff3-i: 3
            ]
            o/ff3-i
        ]
        --assert 3 = ff3-f

    --test-- "funfun4"
        ff4-i: 1
        ff4-f: function [][
            ff4-i: 2
            o: make object! [
                ff4-i: 3
            ]
            ff4-i
        ]
        --assert 2 = ff4-f

    --test-- "funfun5 #964"
        ff5-f: function [] [
            either true [
                ff5-x
             ][
                ff5-x: 0
            ]
        ]
        --assert none = ff5-f

    --test-- "funfun6 #964"
        ff6-f: function [] [
            either false [
                ff6-x
             ][
                ff6-x: 0
            ]
        ]
        --assert 0 = ff6-f

    --test-- "funfun7"
        ff7-f: function [] [
            a: 1
            b: make object! [c: 2]
            c
        ]
        --assert none = ff7-f

     --test-- "funfun8"
        ff8-i: 1
        ff8-f: function [] [
            a: 1
            b: make object! [ff8-i: 2]
            ff8-i
        ]
        --assert none = ff8-f

     --test-- "funfun9"
        ff9-f: function [] [
            a: 1
            b: function [] [c: 2]
            b
            c
        ]
        --assert none = ff9-f

     --test-- "funfun10"
        ff10-i: 1
        ff10-f: function [] [
            a: 1
            b: function [] [ff10-i: 2]
            b
            ff10-i
        ]
        --assert none = ff10-f

===end-group===

~~~end-file~~~