From 52615f646626e93a1560d3bcebcdf122f246e59a Mon Sep 17 00:00:00 2001
From: Tom Ryder <tom@sanctum.geek.nz>
Date: Sun, 11 Dec 2016 16:22:36 +1300
Subject: Still untangling the shell highlighting mess

---
 vim/after/syntax/sh.vim | 98 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 98 insertions(+)
 create mode 100644 vim/after/syntax/sh.vim

(limited to 'vim/after/syntax')

diff --git a/vim/after/syntax/sh.vim b/vim/after/syntax/sh.vim
new file mode 100644
index 00000000..e8b41ba4
--- /dev/null
+++ b/vim/after/syntax/sh.vim
@@ -0,0 +1,98 @@
+" If g:is_posix is set, g:is_kornshell is probably set too, a strange decision
+" by sh.vim. No matter; we can tease out whether this is actually a Korn shell
+" script using our own b:is_ksh flag set at the end of
+" ~/.vim/after/ftdetect/sh.vim, and if it isn't, we'll throw away the
+" highlighting groups for ksh.
+if exists('g:is_posix') && exists('g:is_kornshell') && !exists('b:is_ksh')
+  syntax clear kshSpecialVariables
+  syntax clear kshStatement
+endif
+
+" Some corrections for highlighting if we have any of POSIX, Bash, or Ksh
+if exists('g:is_posix') || exists('b:is_bash') || exists('b:is_ksh')
+
+  " The syntax highlighter seems to flag '/baz' in '"${foo:-"$bar"/baz}"' as an
+  " error, and I'm pretty sure it's not, at least in POSIX sh, Bash, and Ksh.
+  syntax clear shDerefWordError
+
+  " The syntax highlighter doesn't match parens for subshells for 'if' tests
+  " correctly if they're on separate lines. This happens enough that it's
+  " probably not worth keeping the error.
+  syntax clear shParenError
+
+endif
+
+" Some corrections for highlighting specific to the Bash mode
+if exists('b:is_bash')
+
+  " I don't like bashAdminStatement; these are not keywords, they're just
+  " strings for init scripts.
+  syntax clear bashAdminStatement
+
+  " Reduce bashStatement down to just builtins; highlighting 'grep' is not
+  " very useful. This list was taken from `compgen -A helptopic` on Bash
+  " 4.4.5.
+  syntax clear bashStatement
+  syntax keyword bashStatement
+        \ .
+        \ :
+        \ alias
+        \ bg
+        \ bind
+        \ break
+        \ builtin
+        \ caller
+        \ cd
+        \ command
+        \ compgen
+        \ complete
+        \ compopt
+        \ continue
+        \ coproc
+        \ dirs
+        \ disown
+        \ echo
+        \ enable
+        \ eval
+        \ exec
+        \ exit
+        \ false
+        \ fc
+        \ fg
+        \ function
+        \ getopts
+        \ hash
+        \ help
+        \ history
+        \ jobs
+        \ kill
+        \ let
+        \ logout
+        \ mapfile
+        \ popd
+        \ printf
+        \ pushd
+        \ pwd
+        \ read
+        \ readarray
+        \ readonly
+        \ return
+        \ select
+        \ set
+        \ shift
+        \ shopt
+        \ source
+        \ suspend
+        \ test
+        \ time
+        \ times
+        \ trap
+        \ true
+        \ type
+        \ ulimit
+        \ umask
+        \ unalias
+        \ until
+        \ variables
+        \ wait
+endif
-- 
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