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runtime(sh): consider sh as POSIX shell by default
Also, do not set g:is_kornshell when g:is_posix is set. BSD shells are POSIX but many are derived from the ash shell. closes: #16939 Signed-off-by: Mohamed Akram <mohd.akram@outlook.com> Signed-off-by: Christian Brabandt <cb@256bit.org>
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@ -1,4 +1,4 @@
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*syntax.txt* For Vim version 9.1. Last change: 2025 Mar 15
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*syntax.txt* For Vim version 9.1. Last change: 2025 Mar 21
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VIM REFERENCE MANUAL by Bram Moolenaar
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@ -3512,25 +3512,25 @@ cases pertain, then the first line of the file is examined (ex. looking for
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/bin/sh /bin/ksh /bin/bash). If the first line specifies a shelltype, then
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that shelltype is used. However some files (ex. .profile) are known to be
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shell files but the type is not apparent. Furthermore, on many systems sh is
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symbolically linked to "bash" (Linux, Windows+cygwin) or "ksh" (Posix).
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symbolically linked to "bash" (Linux, Windows+cygwin) or "ksh" (POSIX).
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One may specify a global default by instantiating one of the following
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variables in your <.vimrc>:
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ksh: >
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let g:is_kornshell = 1
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< posix: (using this is nearly the same as setting g:is_kornshell to 1) >
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< posix: (default) >
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let g:is_posix = 1
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< bash: >
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let g:is_bash = 1
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< sh: (default) Bourne shell >
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< dash: >
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let g:is_dash = 1
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< sh: Bourne shell >
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let g:is_sh = 1
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< (dash users should use posix)
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If there's no "#! ..." line, and the user hasn't availed himself/herself of a
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default sh.vim syntax setting as just shown, then syntax/sh.vim will assume
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the Bourne shell syntax. No need to quote RFCs or market penetration
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the POSIX shell syntax. No need to quote RFCs or market penetration
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statistics in error reports, please -- just select the default version of the
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sh your system uses and install the associated "let..." in your <.vimrc>.
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@ -7,6 +7,7 @@
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" 2024 Nov 03 by Aliaksei Budavei <0x000c70 AT gmail DOT com> (improved bracket expressions, #15941)
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" 2025 Jan 06 add $PS0 to bashSpecialVariables (#16394)
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" 2025 Jan 18 add bash coproc, remove duplicate syn keywords (#16467)
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" 2025 Mar 21 update shell capability detection (#16939)
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" Version: 208
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" Former URL: http://www.drchip.org/astronaut/vim/index.html#SYNTAX_SH
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" For options and settings, please use: :help ft-sh-syntax
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@ -17,6 +18,9 @@ if exists("b:current_syntax")
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finish
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endif
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" Ensure this is set unless we find another shell
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let b:is_sh = 1
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" If the shell script itself specifies which shell to use, use it
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if getline(1) =~ '\<ksh\>'
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let b:is_kornshell = 1
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@ -24,7 +28,25 @@ elseif getline(1) =~ '\<bash\>'
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let b:is_bash = 1
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elseif getline(1) =~ '\<dash\>'
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let b:is_dash = 1
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elseif !exists("g:is_kornshell") && !exists("g:is_bash") && !exists("g:is_posix") && !exists("g:is_sh") && !exists("g:is_dash")
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" handling /bin/sh with is_kornshell/is_sh {{{1
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" b:is_sh will be set when "#! /bin/sh" is found;
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" However, it often is just a masquerade by bash (typically Linux)
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" or kornshell (typically workstations with Posix "sh").
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" So, when the user sets "g:is_kornshell", "g:is_bash",
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" "g:is_posix" or "g:is_dash", a b:is_sh is converted into
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" b:is_kornshell/b:is_bash/b:is_posix/b:is_dash, respectively.
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elseif !exists("b:is_kornshell") && !exists("b:is_bash") && !exists("b:is_posix") && !exists("b:is_dash")
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if exists("g:is_kornshell")
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let b:is_kornshell= 1
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elseif exists("g:is_bash")
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let b:is_bash= 1
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elseif exists("g:is_dash")
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let b:is_dash= 1
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elseif exists("g:is_posix")
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let b:is_posix= 1
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elseif exists("g:is_sh")
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let b:is_sh= 1
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else
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" user did not specify which shell to use, and
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" the script itself does not specify which shell to use. FYI: /bin/sh is ambiguous.
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" Assuming /bin/sh is executable, and if its a link, find out what it links to.
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@ -40,39 +62,11 @@ elseif !exists("g:is_kornshell") && !exists("g:is_bash") && !exists("g:is_posix"
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let b:is_bash = 1
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elseif s:shell =~ '\<dash\>'
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let b:is_dash = 1
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else
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let b:is_posix = 1
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endif
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unlet s:shell
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endif
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" handling /bin/sh with is_kornshell/is_sh {{{1
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" b:is_sh will be set when "#! /bin/sh" is found;
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" However, it often is just a masquerade by bash (typically Linux)
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" or kornshell (typically workstations with Posix "sh").
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" So, when the user sets "g:is_bash", "g:is_kornshell",
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" or "g:is_posix", a b:is_sh is converted into b:is_bash/b:is_kornshell,
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" respectively.
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if !exists("b:is_kornshell") && !exists("b:is_bash") && !exists("b:is_dash")
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if exists("g:is_posix") && !exists("g:is_kornshell")
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let g:is_kornshell= g:is_posix
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endif
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if exists("g:is_kornshell")
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let b:is_kornshell= 1
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if exists("b:is_sh")
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unlet b:is_sh
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endif
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elseif exists("g:is_bash")
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let b:is_bash= 1
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if exists("b:is_sh")
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unlet b:is_sh
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endif
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elseif exists("g:is_dash")
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let b:is_dash= 1
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if exists("b:is_sh")
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unlet b:is_sh
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endif
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else
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let b:is_sh= 1
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endif
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endif
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" if b:is_dash, set b:is_posix too
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@ -80,6 +74,12 @@ if exists("b:is_dash")
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let b:is_posix= 1
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endif
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if exists("b:is_kornshell") || exists("b:is_bash")
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if exists("b:is_sh")
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unlet b:is_sh
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endif
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endif
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" set up default g:sh_fold_enabled {{{1
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" ================================
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if !exists("g:sh_fold_enabled")
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