Improve bash and zsh highlighting

syntax/sh.vim

@@ -0,0 +1,60 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'sh') == -1
+
+" Shebang
+syn match shShebang "^#!.*$" containedin=shComment
+
+" Operators
+syn match shOperator '||'
+syn match shOperator '&&'
+
+" Match semicolons as Delimiter rather than Operator
+syn match shSemicolon ';' containedin=shOperator,zshOperator
+
+" Highlight braces, brackets and parens as Delimiters in zsh
+syn match zshDelim '\v(\(|\))' containedin=zshParentheses
+syn match zshDelim '\v(\{|\})' containedin=zshBraces
+syn match zshDelim '\v(\[|\])' containedin=zshParentheses
+
+" Match command flags in zsh
+syn match zshFlag "\v<-\w+" containedin=zshBrackets,zshParentheses
+
+" Special files as Constants
+syn match Constant "\v/dev/\w+"
+            \ containedin=shFunctionOne,shIf,shCmdParenRegion,shCommandSub
+
+" Common commands
+let commands = [ 'arch', 'awk', 'b2sum', 'base32', 'base64', 'basename', 'basenc', 'bash', 'brew', 'cat', 'chcon', 'chgrp', 'chown', 'chroot', 'cksum', 'comm', 'cp', 'csplit', 'curl', 'cut', 'date', 'dd', 'defaults', 'df', 'dir', 'dircolors', 'dirname', 'ed', 'env', 'expand', 'factor', 'fmt', 'fold', 'git', 'grep', 'groups', 'head', 'hexdump', 'hostid', 'hostname', 'hugo', 'id', 'install', 'join', 'killall', 'link', 'ln', 'logname', 'md5sum', 'mkdir', 'mkfifo', 'mknod', 'mktemp', 'nice', 'nl', 'nohup', 'npm', 'nproc', 'numfmt', 'od', 'open', 'paste', 'pathchk', 'pr', 'printenv', 'printf', 'ptx', 'readlink', 'realpath', 'rg', 'runcon', 'scutil', 'sed', 'seq', 'sha1sum', 'sha2', 'shred', 'shuf', 'split', 'stat', 'stdbuf', 'stty', 'sudo', 'sum', 'sync', 'tac', 'tee', 'terminfo', 'timeout', 'tmux', 'top', 'touch', 'tput', 'tr', 'truncate', 'tsort', 'tty', 'uname', 'unexpand', 'uniq', 'unlink', 'uptime', 'users', 'vdir', 'vim', 'wc', 'who', 'whoami', 'yabai', 'yes' ]
+
+for i in commands
+    execute 'syn match shStatement "\v(\w|-)@<!'
+                \ . i
+                \ . '(\w|-)@!" containedin=shFunctionOne,shIf,shCmdParenRegion,shCommandSub,zshBrackets'
+endfor
+
+" Fix default highlighting groups
+hi def link bashSpecialVariables Identifier
+hi def link shCmdSubRegion Delimiter
+hi def link shDerefSimple Identifier
+hi def link shFor Identifier
+hi def link shFunctionKey Statement
+hi def link shQuote StringDelimiter
+hi def link shRange Delimiter
+hi def link shSnglCase Delimiter
+hi def link shStatement Statement
+hi def link shTestOpr Operator
+hi def link shVarAssign Operator
+hi def link zshDeref Identifier
+hi def link zshFunction Function
+hi def link zshOperator Operator
+hi def link zshStringDelimiter StringDelimiter
+hi def link zshSubst Identifier
+hi def link zshSubstDelim Delimiter
+hi def link zshVariableDef Identifier
+
+" Link custom groups
+hi def link shSemicolon Delimiter
+hi def link shShebang PreProc
+hi def link zshDelim Delimiter
+hi def link zshFlag Special
+
+endif

syntax/zsh.vim

@@ -0,0 +1,60 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'sh') == -1
+
+" Shebang
+syn match shShebang "^#!.*$" containedin=shComment
+
+" Operators
+syn match shOperator '||'
+syn match shOperator '&&'
+
+" Match semicolons as Delimiter rather than Operator
+syn match shSemicolon ';' containedin=shOperator,zshOperator
+
+" Highlight braces, brackets and parens as Delimiters in zsh
+syn match zshDelim '\v(\(|\))' containedin=zshParentheses
+syn match zshDelim '\v(\{|\})' containedin=zshBraces
+syn match zshDelim '\v(\[|\])' containedin=zshParentheses
+
+" Match command flags in zsh
+syn match zshFlag "\v<-\w+" containedin=zshBrackets,zshParentheses
+
+" Special files as Constants
+syn match Constant "\v/dev/\w+"
+            \ containedin=shFunctionOne,shIf,shCmdParenRegion,shCommandSub
+
+" Common commands
+let commands = [ 'arch', 'awk', 'b2sum', 'base32', 'base64', 'basename', 'basenc', 'bash', 'brew', 'cat', 'chcon', 'chgrp', 'chown', 'chroot', 'cksum', 'comm', 'cp', 'csplit', 'curl', 'cut', 'date', 'dd', 'defaults', 'df', 'dir', 'dircolors', 'dirname', 'ed', 'env', 'expand', 'factor', 'fmt', 'fold', 'git', 'grep', 'groups', 'head', 'hexdump', 'hostid', 'hostname', 'hugo', 'id', 'install', 'join', 'killall', 'link', 'ln', 'logname', 'md5sum', 'mkdir', 'mkfifo', 'mknod', 'mktemp', 'nice', 'nl', 'nohup', 'npm', 'nproc', 'numfmt', 'od', 'open', 'paste', 'pathchk', 'pr', 'printenv', 'printf', 'ptx', 'readlink', 'realpath', 'rg', 'runcon', 'scutil', 'sed', 'seq', 'sha1sum', 'sha2', 'shred', 'shuf', 'split', 'stat', 'stdbuf', 'stty', 'sudo', 'sum', 'sync', 'tac', 'tee', 'terminfo', 'timeout', 'tmux', 'top', 'touch', 'tput', 'tr', 'truncate', 'tsort', 'tty', 'uname', 'unexpand', 'uniq', 'unlink', 'uptime', 'users', 'vdir', 'vim', 'wc', 'who', 'whoami', 'yabai', 'yes' ]
+
+for i in commands
+    execute 'syn match shStatement "\v(\w|-)@<!'
+                \ . i
+                \ . '(\w|-)@!" containedin=shFunctionOne,shIf,shCmdParenRegion,shCommandSub,zshBrackets'
+endfor
+
+" Fix default highlighting groups
+hi def link bashSpecialVariables Identifier
+hi def link shCmdSubRegion Delimiter
+hi def link shDerefSimple Identifier
+hi def link shFor Identifier
+hi def link shFunctionKey Statement
+hi def link shQuote StringDelimiter
+hi def link shRange Delimiter
+hi def link shSnglCase Delimiter
+hi def link shStatement Statement
+hi def link shTestOpr Operator
+hi def link shVarAssign Operator
+hi def link zshDeref Identifier
+hi def link zshFunction Function
+hi def link zshOperator Operator
+hi def link zshStringDelimiter StringDelimiter
+hi def link zshSubst Identifier
+hi def link zshSubstDelim Delimiter
+hi def link zshVariableDef Identifier
+
+" Link custom groups
+hi def link shSemicolon Delimiter
+hi def link shShebang PreProc
+hi def link zshDelim Delimiter
+hi def link zshFlag Special
+
+endif