prompt: You will be provided with a partial code base and an issue statement explaining a problem to resolve.
  <issue>
  [help keystrokes] Help keystrokes has longnames for about 20 commands
  **Small description**
  Keystrokes in HelpSheet display commands not keystrokes for about 20 commands.
  
  **Expected result**
  Keystroke values
  
  **Actual result with screenshot**
  
  sheet	longname	keystrokes
  TableSheet	go-next-selected	next-selected
  TableSheet	go-prev-selected	prev-selected
  TableSheet	setcol-clipboard	paste-cells
  TableSheet	search-prev	prev-search
  TableSheet	setcol-input	edit-cells
  TableSheet	setcol-fill	fill-nulls
  TableSheet	go-next-value	next-value
  TableSheet	go-right-page	page-right
  BaseSheet	jump-prev	prev-sheet
  TableSheet	go-prev-value	prev-value
  BaseSheet	open-new	add-sheet
  TableSheet	go-next-null	next-null
  TableSheet	go-left-page	page-left
  TableSheet	go-prev-null	prev-null
  TableSheet	open-row	dive-row
  DirSheet	open-row	dive-row
  BaseSheet	open-statuses	statuses
  Canvas	zoomout-mouse	2097152
  BaseSheet	show-status	status
  
  **Steps to reproduce with sample data and a .vd**
  Visit the help sheet, and look for the long commands above.
  
  **Additional context**
  Please include the version of VisiData. Latest from develop
  
  
  </issue>
  <code>
  [start of visidata/help.py]
  1 from visidata import *
  2 
  3 
  4 class HelpSheet(MetaSheet):
  5     'Show all commands available to the source sheet.'
  6     rowtype = 'commands'
  7     precious = False
  8     _ordering = [('sheet', False), ('longname', False)]
  9 
  10     columns = [
  11         ColumnAttr('sheet'),
  12         ColumnAttr('longname'),
  13         Column('keystrokes', getter=lambda col,row: col.sheet.revbinds.get(row.longname)),
  14         Column('description', getter=lambda col,row: col.sheet.cmddict[(row.sheet, row.longname)].helpstr),
  15         ColumnAttr('execstr', width=0),
  16         Column('logged', width=0, getter=lambda col,row: isLoggableCommand(row.longname)),
  17     ]
  18     nKeys = 2
  19 
  20     def iterload(self):
  21         from pkg_resources import resource_filename
  22         cmdlist = VisiDataMetaSheet('cmdlist', source=None)
  23 
  24         self.cmddict = {}
  25         itcmds = vd.commands.iterall()
  26         for (k, o), v in itcmds:
  27             yield v
  28             v.sheet = o
  29             self.cmddict[(v.sheet, v.longname)] = v
  30 
  31         for cmdrow in cmdlist.rows:
  32             k = (cmdrow.sheet, cmdrow.longname)
  33             if k in self.cmddict:
  34                 self.cmddict[k].helpstr = cmdrow.helpstr
  35 
  36         self.revbinds = {}  # [longname] -> keystrokes
  37         itbindings = vd.bindkeys.iterall()
  38         for (keystrokes, _), longname in itbindings:
  39             if keystrokes not in self.revbinds:
  40                 self.revbinds[longname] = keystrokes
  41 
  42 
  43 @VisiData.api
  44 @asyncthread
  45 def help_search(vd, sheet, regex):
  46     vs = HelpSheet(source=None)
  47     vs.rows = []  # do not trigger push reload
  48     vd.push(vs)   # push first, then reload
  49     vd.sync(vs.reload())
  50 
  51     # find rows matching regex on original HelpSheet
  52     rowidxs = list(vd.searchRegex(vs, regex=regex, columns="visibleCols"))
  53 
  54     # add only matching rows
  55     allrows = vs.rows
  56     vs.rows = []
  57     for rowidx in rowidxs:
  58         vs.addRow(allrows[rowidx])
  59 
  60 
  61 @VisiData.global_api
  62 def openManPage(vd):
  63     from pkg_resources import resource_filename
  64     import os
  65     with SuspendCurses():
  66         os.system(' '.join(['man', resource_filename(__name__, 'man/vd.1')]))
  67 
  68 
  69 # in VisiData, ^H refers to the man page
  70 globalCommand('^H', 'sysopen-help', 'openManPage()', 'view vd man page')
  71 BaseSheet.addCommand('z^H', 'help-commands', 'vd.push(HelpSheet(name + "_commands", source=sheet, revbinds={}))', 'view sheet of command longnames and keybindings for current sheet')
  72 BaseSheet.addCommand('gz^H', 'help-commands-all', 'vd.push(HelpSheet("all_commands", source=None, revbinds={}))', 'view sheet of command longnames and keybindings for all sheet types')
  73 globalCommand(None, 'help-search', 'help_search(sheet, input("help: "))', 'search through command longnames with search terms')
  74 
  75 BaseSheet.bindkey('KEY_F(1)', 'sysopen-help')
  76 BaseSheet.bindkey('KEY_BACKSPACE', 'sysopen-help')
  77 BaseSheet.bindkey('zKEY_F(1)', 'help-commands')
  78 BaseSheet.bindkey('zKEY_BACKSPACE', 'help-commands')
  79
  [end of visidata/help.py]
  </code>
  
  I need you to solve this issue by generating a single patch file that I can apply directly to this repository using git apply. Please respond with a single patch file in the following format.
  <patch>
  diff --git a/file.py b/file.py
  --- a/file.py
  +++ b/file.py
  @@ -1,27 +1,35 @@
   def euclidean(a, b):
  -    while b:
  -        a, b = b, a % b
  -    return a
  +    if b == 0:
  +        return a
  +    return euclidean(b, a % b)
   
   
   def bresenham(x0, y0, x1, y1):
       points = []
       dx = abs(x1 - x0)
       dy = abs(y1 - y0)
  -    sx = 1 if x0 < x1 else -1
  -    sy = 1 if y0 < y1 else -1
  -    err = dx - dy
  +    x, y = x0, y0
  +    sx = -1 if x0 > x1 else 1
  +    sy = -1 if y0 > y1 else 1
   
  -    while True:
  -        points.append((x0, y0))
  -        if x0 == x1 and y0 == y1:
  -            break
  -        e2 = 2 * err
  -        if e2 > -dy:
  -            err -= dy
  -            x0 += sx
  -        if e2 < dx:
  -            err += dx
  -            y0 += sy
  +    if dx > dy:
  +        err = dx / 2.0
  +        while x != x1:
  +            points.append((x, y))
  +            err -= dy
  +            if err < 0:
  +                y += sy
  +                err += dx
  +            x += sx
  +    else:
  +        err = dy / 2.0
  +        while y != y1:
  +            points.append((x, y))
  +            err -= dx
  +            if err < 0:
  +                x += sx
  +                err += dy
  +            y += sy
  +
  +    points.append((x, y))
       return points
  
  </patch>
golden_diff: diff --git a/visidata/help.py b/visidata/help.py
  --- a/visidata/help.py
  +++ b/visidata/help.py
  @@ -36,7 +36,7 @@
           self.revbinds = {}  # [longname] -> keystrokes
           itbindings = vd.bindkeys.iterall()
           for (keystrokes, _), longname in itbindings:
  -            if keystrokes not in self.revbinds:
  +            if (keystrokes not in self.revbinds) and ('-' not in keystrokes or keystrokes[-1] == '-'):
                   self.revbinds[longname] = keystrokes
  
verification_info: {"golden_diff": "diff --git a/visidata/help.py b/visidata/help.py\n--- a/visidata/help.py\n+++ b/visidata/help.py\n@@ -36,7 +36,7 @@\n         self.revbinds = {}  # [longname] -> keystrokes\n         itbindings = vd.bindkeys.iterall()\n         for (keystrokes, _), longname in itbindings:\n-            if keystrokes not in self.revbinds:\n+            if (keystrokes not in self.revbinds) and ('-' not in keystrokes or keystrokes[-1] == '-'):\n                 self.revbinds[longname] = keystrokes\n", "issue": "[help keystrokes] Help keystrokes has longnames for about 20 commands\n**Small description**\r\nKeystrokes in HelpSheet display commands not keystrokes for about 20 commands.\r\n\r\n**Expected result**\r\nKeystroke values\r\n\r\n**Actual result with screenshot**\r\n\r\nsheet\tlongname\tkeystrokes\r\nTableSheet\tgo-next-selected\tnext-selected\r\nTableSheet\tgo-prev-selected\tprev-selected\r\nTableSheet\tsetcol-clipboard\tpaste-cells\r\nTableSheet\tsearch-prev\tprev-search\r\nTableSheet\tsetcol-input\tedit-cells\r\nTableSheet\tsetcol-fill\tfill-nulls\r\nTableSheet\tgo-next-value\tnext-value\r\nTableSheet\tgo-right-page\tpage-right\r\nBaseSheet\tjump-prev\tprev-sheet\r\nTableSheet\tgo-prev-value\tprev-value\r\nBaseSheet\topen-new\tadd-sheet\r\nTableSheet\tgo-next-null\tnext-null\r\nTableSheet\tgo-left-page\tpage-left\r\nTableSheet\tgo-prev-null\tprev-null\r\nTableSheet\topen-row\tdive-row\r\nDirSheet\topen-row\tdive-row\r\nBaseSheet\topen-statuses\tstatuses\r\nCanvas\tzoomout-mouse\t2097152\r\nBaseSheet\tshow-status\tstatus\r\n\r\n**Steps to reproduce with sample data and a .vd**\r\nVisit the help sheet, and look for the long commands above.\r\n\r\n**Additional context**\r\nPlease include the version of VisiData. Latest from develop\r\n\n", "before_files": [{"content": "from visidata import *\n\n\nclass HelpSheet(MetaSheet):\n    'Show all commands available to the source sheet.'\n    rowtype = 'commands'\n    precious = False\n    _ordering = [('sheet', False), ('longname', False)]\n\n    columns = [\n        ColumnAttr('sheet'),\n        ColumnAttr('longname'),\n        Column('keystrokes', getter=lambda col,row: col.sheet.revbinds.get(row.longname)),\n        Column('description', getter=lambda col,row: col.sheet.cmddict[(row.sheet, row.longname)].helpstr),\n        ColumnAttr('execstr', width=0),\n        Column('logged', width=0, getter=lambda col,row: isLoggableCommand(row.longname)),\n    ]\n    nKeys = 2\n\n    def iterload(self):\n        from pkg_resources import resource_filename\n        cmdlist = VisiDataMetaSheet('cmdlist', source=None)\n\n        self.cmddict = {}\n        itcmds = vd.commands.iterall()\n        for (k, o), v in itcmds:\n            yield v\n            v.sheet = o\n            self.cmddict[(v.sheet, v.longname)] = v\n\n        for cmdrow in cmdlist.rows:\n            k = (cmdrow.sheet, cmdrow.longname)\n            if k in self.cmddict:\n                self.cmddict[k].helpstr = cmdrow.helpstr\n\n        self.revbinds = {}  # [longname] -> keystrokes\n        itbindings = vd.bindkeys.iterall()\n        for (keystrokes, _), longname in itbindings:\n            if keystrokes not in self.revbinds:\n                self.revbinds[longname] = keystrokes\n\n\n@VisiData.api\n@asyncthread\ndef help_search(vd, sheet, regex):\n    vs = HelpSheet(source=None)\n    vs.rows = []  # do not trigger push reload\n    vd.push(vs)   # push first, then reload\n    vd.sync(vs.reload())\n\n    # find rows matching regex on original HelpSheet\n    rowidxs = list(vd.searchRegex(vs, regex=regex, columns=\"visibleCols\"))\n\n    # add only matching rows\n    allrows = vs.rows\n    vs.rows = []\n    for rowidx in rowidxs:\n        vs.addRow(allrows[rowidx])\n\n\n@VisiData.global_api\ndef openManPage(vd):\n    from pkg_resources import resource_filename\n    import os\n    with SuspendCurses():\n        os.system(' '.join(['man', resource_filename(__name__, 'man/vd.1')]))\n\n\n# in VisiData, ^H refers to the man page\nglobalCommand('^H', 'sysopen-help', 'openManPage()', 'view vd man page')\nBaseSheet.addCommand('z^H', 'help-commands', 'vd.push(HelpSheet(name + \"_commands\", source=sheet, revbinds={}))', 'view sheet of command longnames and keybindings for current sheet')\nBaseSheet.addCommand('gz^H', 'help-commands-all', 'vd.push(HelpSheet(\"all_commands\", source=None, revbinds={}))', 'view sheet of command longnames and keybindings for all sheet types')\nglobalCommand(None, 'help-search', 'help_search(sheet, input(\"help: \"))', 'search through command longnames with search terms')\n\nBaseSheet.bindkey('KEY_F(1)', 'sysopen-help')\nBaseSheet.bindkey('KEY_BACKSPACE', 'sysopen-help')\nBaseSheet.bindkey('zKEY_F(1)', 'help-commands')\nBaseSheet.bindkey('zKEY_BACKSPACE', 'help-commands')\n", "path": "visidata/help.py"}]}