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# Test the "emulate" builtin and related functions.

%prep

  isset() { 
    print -n "${1}: "
    if [[ -o $1 ]]; then print yes; else print no; fi
  }
  showopts() {
    # Set for Bourne shell emulation
    isset shwordsplit
    # Set in native mode and unless "emulate -R" is in use
    isset banghist
  }
  cshowopts() {
    showopts
    # Show a csh option, too
    isset cshnullglob
  }

%test

  (print Before
  showopts
  fn() {
     emulate sh
  }
  fn
   print After
  showopts)
0:Basic use of emulate
>Before
>shwordsplit: no
>banghist: yes
>After
>shwordsplit: yes
>banghist: yes

  fn() {
    emulate -L sh
    print During
    showopts
  }
  print Before
  showopts
  fn
  print After
  showopts
0:Use of emulate -L
>Before
>shwordsplit: no
>banghist: yes
>During
>shwordsplit: yes
>banghist: yes
>After
>shwordsplit: no
>banghist: yes

  (print Before
  showopts
  emulate -R sh
  print After
  showopts)
0:Use of emulate -R
>Before
>shwordsplit: no
>banghist: yes
>After
>shwordsplit: yes
>banghist: no

  print Before
  showopts
  emulate sh -c 'print During; showopts'
  print After
  showopts
0:Use of emulate -c
>Before
>shwordsplit: no
>banghist: yes
>During
>shwordsplit: yes
>banghist: yes
>After
>shwordsplit: no
>banghist: yes

  print Before
  showopts
  emulate -R sh -c 'print During; showopts'
  print After
  showopts
0:Use of emulate -R -c
>Before
>shwordsplit: no
>banghist: yes
>During
>shwordsplit: yes
>banghist: no
>After
>shwordsplit: no
>banghist: yes

  print Before
  showopts
  emulate -R sh -c 'shshowopts() { showopts; }'
  print After definition
  showopts
  print In sticky emulation
  shshowopts
  print After sticky emulation
  showopts
0:Basic sticky function emulation
>Before
>shwordsplit: no
>banghist: yes
>After definition
>shwordsplit: no
>banghist: yes
>In sticky emulation
>shwordsplit: yes
>banghist: no
>After sticky emulation
>shwordsplit: no
>banghist: yes

  print Before
  cshowopts
  emulate -R sh -c 'shshowopts() { cshowopts; }'
  emulate csh -c 'cshshowopts() {
    cshowopts
    print In nested sh emulation
    shshowopts
  }'
  print After definition
  cshowopts
  print In sticky csh emulation
  cshshowopts
  print After sticky emulation
  cshowopts
0:Basic sticky function emulation
>Before
>shwordsplit: no
>banghist: yes
>cshnullglob: no
>After definition
>shwordsplit: no
>banghist: yes
>cshnullglob: no
>In sticky csh emulation
>shwordsplit: no
>banghist: yes
>cshnullglob: yes
>In nested sh emulation
>shwordsplit: yes
>banghist: no
>cshnullglob: no
>After sticky emulation
>shwordsplit: no
>banghist: yes
>cshnullglob: no

  isalp() { if [[ -o alwayslastprompt ]]; then print on; else print off; fi; }
  emulate sh -c 'shfunc_inner() { setopt alwayslastprompt; }'
  emulate csh -c 'cshfunc_inner() { setopt alwayslastprompt; }'
  emulate sh -c 'shfunc_outer() {
    unsetopt alwayslastprompt;
    shfunc_inner;
    isalp
    unsetopt alwayslastprompt
    cshfunc_inner
    isalp
  }'
  shfunc_outer
0:Sticky emulation not triggered if sticky emulation unchanged
>on
>off

  (
  setopt ignorebraces
  emulate zsh -o extendedglob -c '
  [[ -o ignorebraces ]] || print "Yay, ignorebraces was reset"
  [[ -o extendedglob ]] && print "Yay, extendedglob is set"
  '
  )
0:emulate -c with options
>Yay, ignorebraces was reset
>Yay, extendedglob is set

  (
  setopt ignorebraces          
  emulate zsh -o extendedglob
  [[ -o ignorebraces ]] || print "Yay, ignorebraces is no longer set"
  [[ -o extendedglob ]] && print "Yay, extendedglob is set"
  )
0:emulate with options but no -c
>Yay, ignorebraces is no longer set
>Yay, extendedglob is set

  emulate zsh -o fixallmybugs 'print This was executed, bad'
1:emulate -c with incorrect options
?(eval):emulate:1: no such option: fixallmybugs

  emulate zsh -c '
    func() { [[ -o extendedglob ]] || print extendedglob is off }
  '
  func
  emulate zsh -o extendedglob -c '
    func() { [[ -o extendedglob ]] && print extendedglob is on }
  '
  func
0:options specified alongside emulation are also sticky
>extendedglob is off
>extendedglob is on

  emulate zsh -o extendedglob -c '
    func_inner() { setopt nobareglobqual }
  '
  emulate zsh -o extendedglob -c '
    func_outer() { 
      func_inner
      [[ -o bareglobqual ]] || print bareglobqual was turned off
      [[ -o extendedglob ]] && print extendedglob is on, though
    }
  '
  [[ -o extendedglob ]] || print extendedglob is initially off
  func_outer
0:options propagate between identical emulations
>extendedglob is initially off
>bareglobqual was turned off
>extendedglob is on, though

  emulate zsh -o extendedglob -c '
    func_inner() { setopt nobareglobqual }
  '
  emulate zsh -o extendedglob -o cbases -c '
    func_outer() { 
      func_inner
      [[ -o bareglobqual ]] && print bareglobqual is still on
      [[ -o extendedglob ]] && print extendedglob is on, too
    }
  '
  [[ -o extendedglob ]] || print extendedglob is initially off
  func_outer
0:options do not propagate between different emulations
>extendedglob is initially off
>bareglobqual is still on
>extendedglob is on, too

 emulate sh -c '[[ a == a ]]'
0:regression test for POSIX_ALIASES reserved words
F:Some reserved tokens are handled in alias expansion

 for mode in ksh bash zsh; do
   $ZTST_testdir/../Src/zsh --emulate $mode -f -c 'emulate'
 done
0:--emulate option
>ksh
>sh
>zsh

 $ZTST_testdir/../Src/zsh -f --emulate sh
1:--emulate must be first
*?*: --emulate: must precede other options

 $ZTST_testdir/../Src/zsh --emulate
1:--emulate needs an argument
*?*: --emulate: argument required

 for opt in shwordsplit noshwordsplit; do
   $ZTST_testdir/../Src/zsh --emulate sh -f -o $opt -c '
     [[ -o shwordsplit ]] && echo yes || echo no
   '
 done
0:--emulate followed by other options
>yes
>no

  emulate sh -c '
  foo () {
    VAR=foo &&
    echo $VAR | bar &&
    echo "$VAR"
  }
  bar () {
    tr f b &&
    VAR="$(echo bar | tr r z)" &&
    echo "$VAR"
  }
  foo
  '
  emulate sh -c 'func() { echo | local def="abc"; echo $def;}; func'
  emulate sh -c 'abc="def"; echo | abc="ghi"; echo $abc'
0:emulate sh uses subshell for last pipe entry
>boo
>baz
>foo
>
>def