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runtime(filetype): make shell filetype detection more robust

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closes: #17063

Signed-off-by: Aliaksei Budavei <0x000c70@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
This commit is contained in:
Aliaksei Budavei
2025-04-10 21:52:14 +02:00
committed by Christian Brabandt
parent ec032de646
commit 5c84d12df1
2 changed files with 16 additions and 10 deletions
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11
runtime/syntax/sh.vim
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@@ -9,6 +9,7 @@
" 2025 Jan 18 add bash coproc, remove duplicate syn keywords (#16467)
" 2025 Mar 21 update shell capability detection (#16939)
" 2025 Apr 03 command substitution opening paren at EOL (#17026)
" 2025 Apr 10 improve shell detection (#17084)
" Version: 208
" Former URL: http://www.drchip.org/astronaut/vim/index.html#SYNTAX_SH
" For options and settings, please use: :help ft-sh-syntax
@@ -23,11 +24,13 @@ endif
let b:is_sh = 1
" If the shell script itself specifies which shell to use, use it
if getline(1) =~ '\<ksh\>'
let s:shebang = getline(1)
if s:shebang =~ '^#!.\{-2,}\<ksh\>'
let b:is_kornshell = 1
elseif getline(1) =~ '\<bash\>'
elseif s:shebang =~ '^#!.\{-2,}\<bash\>'
let b:is_bash = 1
elseif getline(1) =~ '\<dash\>'
elseif s:shebang =~ '^#!.\{-2,}\<dash\>'
let b:is_dash = 1
" handling /bin/sh with is_kornshell/is_sh {{{1
" b:is_sh will be set when "#! /bin/sh" is found;
@@ -70,6 +73,8 @@ elseif !exists("b:is_kornshell") && !exists("b:is_bash") && !exists("b:is_posix"
endif
endif
unlet s:shebang
" if b:is_dash, set b:is_posix too
if exists("b:is_dash")
let b:is_posix= 1