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vim-patch:51a06ec: runtime(sh): consider sh as POSIX shell by default (#33078)

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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: vim/vim#16939

51a06ecee0

Co-authored-by: Mohamed Akram <mohd.akram@outlook.com>
This commit is contained in:
zeertzjq
2025-03-27 11:22:22 +08:00
committed by GitHub
parent 750e1836af
commit c5044bd021
2 changed files with 48 additions and 48 deletions
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84
runtime/syntax/sh.vim
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@@ -7,6 +7,7 @@
" 2024 Nov 03 by Aliaksei Budavei <0x000c70 AT gmail DOT com> (improved bracket expressions, #15941)
" 2025 Jan 06 add $PS0 to bashSpecialVariables (#16394)
" 2025 Jan 18 add bash coproc, remove duplicate syn keywords (#16467)
" 2025 Mar 21 update shell capability detection (#16939)
" Version: 208
" Former URL: http://www.drchip.org/astronaut/vim/index.html#SYNTAX_SH
" For options and settings, please use: :help ft-sh-syntax
@@ -17,6 +18,9 @@ if exists("b:current_syntax")
finish
endif
" Ensure this is set unless we find another shell
let b:is_sh = 1
" If the shell script itself specifies which shell to use, use it
if getline(1) =~ '\<ksh\>'
let b:is_kornshell = 1
@@ -24,55 +28,45 @@ elseif getline(1) =~ '\<bash\>'
let b:is_bash = 1
elseif getline(1) =~ '\<dash\>'
let b:is_dash = 1
elseif !exists("g:is_kornshell") && !exists("g:is_bash") && !exists("g:is_posix") && !exists("g:is_sh") && !exists("g:is_dash")
" user did not specify which shell to use, and
" the script itself does not specify which shell to use. FYI: /bin/sh is ambiguous.
" Assuming /bin/sh is executable, and if its a link, find out what it links to.
let s:shell = ""
if executable("/bin/sh")
let s:shell = resolve("/bin/sh")
elseif executable("/usr/bin/sh")
let s:shell = resolve("/usr/bin/sh")
endif
if s:shell =~ '\<ksh\>'
let b:is_kornshell= 1
elseif s:shell =~ '\<bash\>'
let b:is_bash = 1
elseif s:shell =~ '\<dash\>'
let b:is_dash = 1
endif
unlet s:shell
endif
" handling /bin/sh with is_kornshell/is_sh {{{1
" b:is_sh will be set when "#! /bin/sh" is found;
" However, it often is just a masquerade by bash (typically Linux)
" or kornshell (typically workstations with Posix "sh").
" So, when the user sets "g:is_bash", "g:is_kornshell",
" or "g:is_posix", a b:is_sh is converted into b:is_bash/b:is_kornshell,
" respectively.
if !exists("b:is_kornshell") && !exists("b:is_bash") && !exists("b:is_dash")
if exists("g:is_posix") && !exists("g:is_kornshell")
let g:is_kornshell= g:is_posix
" So, when the user sets "g:is_kornshell", "g:is_bash",
" "g:is_posix" or "g:is_dash", a b:is_sh is converted into
" b:is_kornshell/b:is_bash/b:is_posix/b:is_dash, respectively.
elseif !exists("b:is_kornshell") && !exists("b:is_bash") && !exists("b:is_posix") && !exists("b:is_dash")
if exists("g:is_kornshell")
let b:is_kornshell= 1
elseif exists("g:is_bash")
let b:is_bash= 1
elseif exists("g:is_dash")
let b:is_dash= 1
elseif exists("g:is_posix")
let b:is_posix= 1
elseif exists("g:is_sh")
let b:is_sh= 1
else
" user did not specify which shell to use, and
" the script itself does not specify which shell to use. FYI: /bin/sh is ambiguous.
" Assuming /bin/sh is executable, and if its a link, find out what it links to.
let s:shell = ""
if executable("/bin/sh")
let s:shell = resolve("/bin/sh")
elseif executable("/usr/bin/sh")
let s:shell = resolve("/usr/bin/sh")
endif
if exists("g:is_kornshell")
let b:is_kornshell= 1
if exists("b:is_sh")
unlet b:is_sh
endif
elseif exists("g:is_bash")
let b:is_bash= 1
if exists("b:is_sh")
unlet b:is_sh
endif
elseif exists("g:is_dash")
let b:is_dash= 1
if exists("b:is_sh")
unlet b:is_sh
endif
if s:shell =~ '\<ksh\>'
let b:is_kornshell= 1
elseif s:shell =~ '\<bash\>'
let b:is_bash = 1
elseif s:shell =~ '\<dash\>'
let b:is_dash = 1
else
let b:is_sh= 1
let b:is_posix = 1
endif
unlet s:shell
endif
endif
" if b:is_dash, set b:is_posix too
@@ -80,6 +74,12 @@ if exists("b:is_dash")
let b:is_posix= 1
endif
if exists("b:is_kornshell") || exists("b:is_bash")
if exists("b:is_sh")
unlet b:is_sh
endif
endif
" set up default g:sh_fold_enabled {{{1
" ================================
if !exists("g:sh_fold_enabled")