text: # Check cases where LIT_OPTS has no effect.
  #
  # RUN:                 %{lit} -s %{inputs}/lit-opts | FileCheck %s
  # RUN: env LIT_OPTS=   %{lit} -s %{inputs}/lit-opts | FileCheck %s
  # RUN: env LIT_OPTS=-s %{lit} -s %{inputs}/lit-opts | FileCheck %s
  
  # Check that LIT_OPTS can override command-line options.
  #
  # RUN: env LIT_OPTS=-a \
  # RUN: %{lit} -s %{inputs}/lit-opts \
  # RUN: | FileCheck -check-prefix=SHOW-ALL -DVAR= %s
  
  # Check that LIT_OPTS understands multiple options with arbitrary spacing.
  #
  # RUN: env LIT_OPTS='-a -v  -Dvar=foobar' \
  # RUN: %{lit} -s %{inputs}/lit-opts \
  # RUN: | FileCheck -check-prefix=SHOW-ALL -DVAR=foobar %s
  
  # Check that LIT_OPTS parses shell-like quotes and escapes.
  #
  # RUN: env LIT_OPTS='-a   -v -Dvar="foo bar"\ baz' \
  # RUN: %{lit} -s %{inputs}/lit-opts \
  # RUN: | FileCheck -check-prefix=SHOW-ALL -DVAR="foo bar baz" %s
  
  # CHECK:      Testing: 1 tests
  # CHECK-NOT:  PASS
  # CHECK:      Passed: 1
  
  # SHOW-ALL:     Testing: 1 tests
  # SHOW-ALL:     PASS: lit-opts :: test.txt (1 of 1)
  # SHOW-ALL:     {{^}}[[VAR]]
  # SHOW-ALL-NOT: PASS
  # SHOW-ALL:     Passed: 1
  