Update runtime files.
diff --git a/runtime/syntax/sh.vim b/runtime/syntax/sh.vim
index 6722d62..13d74db 100644
--- a/runtime/syntax/sh.vim
+++ b/runtime/syntax/sh.vim
@@ -2,8 +2,8 @@
" Language: shell (sh) Korn shell (ksh) bash (sh)
" Maintainer: Charles E. Campbell <NcampObell@SdrPchip.AorgM-NOSPAM>
" Previous Maintainer: Lennart Schultz <Lennart.Schultz@ecmwf.int>
-" Last Change: Nov 25, 2022
-" Version: 204
+" Last Change: Dec 20, 2022
+" Version: 205
" URL: http://www.drchip.org/astronaut/vim/index.html#SYNTAX_SH
" For options and settings, please use: :help ft-sh-syntax
" This file includes many ideas from Eric Brunet (eric.brunet@ens.fr) and heredoc fixes from Felipe Contreras
@@ -190,8 +190,10 @@
" =====
if exists("b:is_kornshell") || exists("b:is_bash") || exists("b:is_posix")
syn match shStatement "\<alias\>"
- syn region shAlias matchgroup=shStatement start="\<alias\>\s\+\(\h[-._[:alnum:]]\+\)\@=" skip="\\$" end="\>\|`"
- syn region shAlias matchgroup=shStatement start="\<alias\>\s\+\(\h[-._[:alnum:]]\+=\)\@=" skip="\\$" end="="
+ syn region shAlias matchgroup=shStatement start="\<alias\>\s\+\(\h[-._[:alnum:]]*\)\@=" skip="\\$" end="\>\|`"
+ syn region shAlias matchgroup=shStatement start="\<alias\>\s\+\(\h[-._[:alnum:]]*=\)\@=" skip="\\$" end="="
+" syn region shAlias matchgroup=shStatement start="\<alias\>\s\+\(\h[-._[:alnum:]]\+\)\@=" skip="\\$" end="\>\|`"
+" syn region shAlias matchgroup=shStatement start="\<alias\>\s\+\(\h[-._[:alnum:]]\+=\)\@=" skip="\\$" end="="
" Touch: {{{1
" =====
@@ -333,7 +335,7 @@
" systems too, however, so the following syntax will flag $(..) as
" an Error under /bin/sh. By consensus of vimdev'ers!
if exists("b:is_kornshell") || exists("b:is_bash") || exists("b:is_posix")
- syn region shCommandSub matchgroup=shCmdSubRegion start="\$(\ze[^(]" skip='\\\\\|\\.' end=")" contains=@shCommandSubList
+ syn region shCommandSub matchgroup=shCmdSubRegion start="\$(\ze[^(]\|$" skip='\\\\\|\\.' end=")" contains=@shCommandSubList
syn region shArithmetic matchgroup=shArithRegion start="\$((" skip='\\\\\|\\.' end="))" contains=@shArithList
syn region shArithmetic matchgroup=shArithRegion start="\$\[" skip='\\\\\|\\.' end="\]" contains=@shArithList
syn match shSkipInitWS contained "^\s\+"
@@ -483,7 +485,9 @@
" Parameter Dereferencing: {{{1
" ========================
-if !exists("g:sh_no_error") && !(exists("b:is_bash") || exists("b:is_kornshell") || exists("b:is_posix"))
+" Note: sh04 failure with following line
+"if !exists("g:sh_no_error") && !(exists("b:is_bash") || exists("b:is_kornshell") || exists("b:is_posix"))
+if !exists("g:sh_no_error")
syn match shDerefWordError "[^}$[~]" contained
endif
syn match shDerefSimple "\$\%(\h\w*\|\d\)" nextgroup=@shNoZSList