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1 " Vim syntax file
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2 " Language: tcsh scripts
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3 " Maintainer: Doug Kearns <dougkearns@gmail.com>
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4 " Previous Maintainer: Gautam Iyer <gi1242+vim@NoSpam.com> where NoSpam=gmail (Original Author)
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5 " Last Change: 2021 Oct 15
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6
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7
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7 " Description: We break up each statement into a "command" and an "end" part.
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8 " All groups are either a "command" or part of the "end" of a statement (ie
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9 " everything after the "command"). This is because blindly highlighting tcsh
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10 " statements as keywords caused way too many false positives. Eg:
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11 "
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12 " set history=200
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13 "
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14 " causes history to come up as a keyword, which we want to avoid.
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15
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16 " Quit when a syntax file was already loaded
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17 if exists('b:current_syntax')
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18 finish
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19 endif
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20
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21 let s:oldcpo = &cpo
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22 set cpo&vim " Line continuation is used
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23
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24 syn iskeyword @,48-57,_,192-255,-
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25
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26 syn case match
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27
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28 " ----- Clusters ----- {{{1
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29 syn cluster tcshModifiers contains=tcshModifier,tcshModifierError
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30 syn cluster tcshQuoteList contains=tcshDQuote,tcshSQuote,tcshBQuote
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31 syn cluster tcshStatementEnds contains=@tcshQuoteList,tcshComment,@tcshVarList,tcshRedir,tcshMeta,tcshHereDoc,tcshSpecial,tcshArgument
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32 syn cluster tcshStatements contains=tcshBuiltin,tcshCommands,tcshIf,tcshWhile
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33 syn cluster tcshVarList contains=tcshUsrVar,tcshArgv,tcshSubst
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34 syn cluster tcshConditions contains=tcshCmdSubst,tcshParenExpr,tcshOperator,tcshNumber,@tcshVarList
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35
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36 " ----- Errors ----- {{{1
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37 " Define first, so can be easily overridden.
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38 syn match tcshError contained '\v\S.+'
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39
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40 " ----- Statements ----- {{{1
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41 " Tcsh commands: Any filename / modifiable variable (must be first!)
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42 syn match tcshCommands '\v[a-zA-Z0-9\\./_$:-]+' contains=tcshSpecial,tcshUsrVar,tcshArgv,tcshVarError nextgroup=tcshStatementEnd
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43
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44 " Builtin commands except those treated specially. Currently (un)set(env),
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45 " (un)alias, if, while, else, bindkey
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46 syn keyword tcshBuiltin nextgroup=tcshStatementEnd alloc bg break breaksw builtins bye case cd chdir complete continue default dirs echo echotc end endif endsw eval exec exit fg filetest foreach getspath getxvers glob goto hashstat history hup inlib jobs kill limit log login logout ls ls-F migrate newgrp nice nohup notify onintr popd printenv pushd rehash repeat rootnode sched setpath setspath settc setty setxvers shift source stop suspend switch telltc termname time umask uncomplete unhash universe unlimit ver wait warp watchlog where which
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47
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48 " StatementEnd is anything after a built-in / command till the lexical end of a
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49 " statement (;, |, ||, |&, && or end of line)
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50 syn region tcshStatementEnd transparent contained matchgroup=tcshBuiltin start='' end='\v\\@<!(;|\|[|&]?|\&\&|$)' contains=@tcshStatementEnds
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51
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52 " set expressions (Contains shell variables)
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53 syn keyword tcshShellVar contained addsuffix afsuser ampm anyerror argv autocorrect autoexpand autolist autologout autorehash backslash_quote catalog cdpath cdtohome color colorcat command compat_expr complete continue continue_args correct csubstnonl cwd dextract dirsfile dirstack dspmbyte dunique echo echo_style edit editors ellipsis euid euser fignore filec gid globdot globstar group highlight histchars histdup histfile histlit history home ignoreeof implicitcd inputmode killdup killring listflags listjobs listlinks listmax listmaxrows loginsh logout mail matchbeep nobeep noclobber noding noglob nokanji nonomatch nostat notify oid owd padhour parseoctal path printexitvalue prompt prompt2 prompt3 promptchars pushdtohome pushdsilent recexact recognize_only_executables rmstar rprompt savedirs savehist sched shell shlvl status symlinks tcsh term time tperiod tty uid user verbose version vimode visiblebell watch who wordchars
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54 syn keyword tcshBuiltin nextgroup=tcshSetEnd set unset
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55 syn region tcshSetEnd contained transparent matchgroup=tcshBuiltin start='' skip='\\$' end='$\|;' contains=tcshShellVar,@tcshStatementEnds
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56
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57 " setenv expressions (Contains environment variables)
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58 syn keyword tcshEnvVar contained AFSUSER COLUMNS DISPLAY EDITOR GROUP HOME HOST HOSTTYPE HPATH LANG LC_CTYPE LINES LS_COLORS MACHTYPE NOREBIND OSTYPE PATH PWD REMOTEHOST SHLVL SYSTYPE TERM TERMCAP USER VENDOR VISUAL
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59 syn keyword tcshBuiltin nextgroup=tcshEnvEnd setenv unsetenv
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60 syn region tcshEnvEnd contained transparent matchgroup=tcshBuiltin start='' skip='\\$' end='$\|;' contains=tcshEnvVar,@tcshStatementEnds
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61
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62 " alias and unalias (contains special aliases)
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63 syn keyword tcshAliases contained beepcmd cwdcmd jobcmd helpcommand periodic precmd postcmd shell
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64 syn keyword tcshBuiltin nextgroup=tcshAliCmd skipwhite alias unalias
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65 syn match tcshAliCmd contained nextgroup=tcshAliEnd skipwhite '\v(\w|-)+' contains=tcshAliases
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66 syn region tcshAliEnd contained transparent matchgroup=tcshBuiltin start='' skip='\\$' end='$\|;' contains=@tcshStatementEnds
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67
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68 " if statements
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69 syn keyword tcshIf nextgroup=tcshIfEnd skipwhite if
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70 syn region tcshIfEnd contained start='\S' skip='\\$' matchgroup=tcshBuiltin end='\v<then>|$' contains=@tcshConditions,tcshSpecial,@tcshStatementEnds
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71 syn region tcshIfEnd contained matchgroup=tcshBuiltin contains=@tcshConditions,tcshSpecial start='(' end='\v\)%(\s+then>)?' skipwhite nextgroup=@tcshStatementEnds
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72 syn region tcshIfEnd contained matchgroup=tcshBuiltin contains=tcshCommands,tcshSpecial start='\v\{\s+' end='\v\s+\}%(\s+then>)?' skipwhite nextgroup=@tcshStatementEnds keepend
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73
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74 " else statements
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75 syn keyword tcshBuiltin nextgroup=tcshIf skipwhite else
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76
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77 " while statements (contains expressions / operators)
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78 syn keyword tcshBuiltin nextgroup=@tcshConditions,tcshSpecial skipwhite while
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79
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80 " Conditions (for if and while)
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81 syn region tcshParenExpr contained contains=@tcshConditions,tcshSpecial matchgroup=tcshBuiltin start='(' end=')'
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82 syn region tcshCmdSubst contained contains=tcshCommands matchgroup=tcshBuiltin start='\v\{\s+' end='\v\s+\}' keepend
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83
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84 " Bindkey. Internal editor functions
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85 syn keyword tcshBindkeyFuncs contained backward-char backward-delete-char
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86 \ backward-delete-word backward-kill-line backward-word
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87 \ beginning-of-line capitalize-word change-case
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88 \ change-till-end-of-line clear-screen complete-word
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89 \ complete-word-fwd complete-word-back complete-word-raw
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90 \ copy-prev-word copy-region-as-kill dabbrev-expand delete-char
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91 \ delete-char-or-eof delete-char-or-list
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92 \ delete-char-or-list-or-eof delete-word digit digit-argument
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93 \ down-history downcase-word end-of-file end-of-line
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94 \ exchange-point-and-mark expand-glob expand-history expand-line
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95 \ expand-variables forward-char forward-word
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96 \ gosmacs-transpose-chars history-search-backward
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97 \ history-search-forward insert-last-word i-search-fwd
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98 \ i-search-back keyboard-quit kill-line kill-region
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99 \ kill-whole-line list-choices list-choices-raw list-glob
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100 \ list-or-eof load-average magic-space newline newline-and-hold
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101 \ newline-and-down-history normalize-path normalize-command
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102 \ overwrite-mode prefix-meta quoted-insert redisplay
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103 \ run-fg-editor run-help self-insert-command sequence-lead-in
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104 \ set-mark-command spell-word spell-line stuff-char
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105 \ toggle-literal-history transpose-chars transpose-gosling
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106 \ tty-dsusp tty-flush-output tty-sigintr tty-sigquit tty-sigtsusp
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107 \ tty-start-output tty-stop-output undefined-key
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108 \ universal-argument up-history upcase-word
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109 \ vi-beginning-of-next-word vi-add vi-add-at-eol vi-chg-case
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110 \ vi-chg-meta vi-chg-to-eol vi-cmd-mode vi-cmd-mode-complete
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111 \ vi-delprev vi-delmeta vi-endword vi-eword vi-char-back
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112 \ vi-char-fwd vi-charto-back vi-charto-fwd vi-insert
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113 \ vi-insert-at-bol vi-repeat-char-fwd vi-repeat-char-back
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114 \ vi-repeat-search-fwd vi-repeat-search-back vi-replace-char
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115 \ vi-replace-mode vi-search-back vi-search-fwd vi-substitute-char
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116 \ vi-substitute-line vi-word-back vi-word-fwd vi-undo vi-zero
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117 \ which-command yank yank-pop e_copy_to_clipboard
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118 \ e_paste_from_clipboard e_dosify_next e_dosify_prev e_page_up
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119 \ e_page_down
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120 syn keyword tcshBuiltin nextgroup=tcshBindkeyEnd bindkey
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121 syn region tcshBindkeyEnd contained transparent matchgroup=tcshBuiltin start='' skip='\\$' end='$' contains=@tcshQuoteList,tcshComment,@tcshVarList,tcshMeta,tcshSpecial,tcshArgument,tcshBindkeyFuncs
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122
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123 " Expressions start with @.
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124 syn match tcshExprStart '\v\@\s+' nextgroup=tcshExprVar
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125 syn match tcshExprVar contained '\v\h\w*%(\[\d+\])?' contains=tcshShellVar,tcshEnvVar nextgroup=tcshExprOp
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126 syn match tcshExprOp contained '++\|--'
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127 syn match tcshExprOp contained '\v\s*\=' nextgroup=tcshExprEnd
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128 syn match tcshExprEnd contained '\v.*$'hs=e+1 contains=@tcshConditions
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129 syn match tcshExprEnd contained '\v.{-};'hs=e contains=@tcshConditions
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130
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131 " ----- Comments: ----- {{{1
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132 syn match tcshComment '#\s.*' contains=tcshTodo,tcshCommentTi,@Spell
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133 syn match tcshComment '\v#($|\S.*)' contains=tcshTodo,tcshCommentTi
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134 syn match tcshSharpBang '^#! .*$'
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135 syn match tcshCommentTi contained '\v#\s*\u\w*(\s+\u\w*)*:'hs=s+1 contains=tcshTodo
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136 syn match tcshTodo contained '\v\c<todo>'
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137
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138 " ----- Strings ----- {{{1
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139 " Tcsh does not allow \" in strings unless the "backslash_quote" shell
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140 " variable is set. Set the vim variable "tcsh_backslash_quote" to 0 if you
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141 " want VIM to assume that no backslash quote constructs exist.
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142
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143 " Backquotes are treated as commands, and are not contained in anything
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144 if exists('tcsh_backslash_quote') && tcsh_backslash_quote == 0
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145 syn region tcshSQuote keepend contained start="\v\\@<!'" end="'"
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146 syn region tcshDQuote keepend contained start='\v\\@<!"' end='"' contains=@tcshVarList,tcshSpecial,@Spell
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147 syn region tcshBQuote keepend start='\v\\@<!`' end='`' contains=@tcshStatements
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148 else
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149 syn region tcshSQuote contained start="\v\\@<!'" skip="\v\\\\|\\'" end="'"
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150 syn region tcshDQuote contained start='\v\\@<!"' end='"' contains=@tcshVarList,tcshSpecial,@Spell
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151 syn region tcshBQuote keepend matchgroup=tcshBQuoteGrp start='\v\\@<!`' skip='\v\\\\|\\`' end='`' contains=@tcshStatements
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152 endif
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153
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154 " ----- Variables ----- {{{1
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155 " Variable Errors. Must come first! \$ constructs will be flagged by
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156 " tcshSpecial, so we don't consider them here.
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157 syn match tcshVarError '\v\$\S*' contained
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158
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159 " Modifiable Variables without {}.
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160 syn match tcshUsrVar contained '\v\$\h\w*%(\[\d+%(-\d+)?\])?' nextgroup=@tcshModifiers contains=tcshShellVar,tcshEnvVar
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161 syn match tcshArgv contained '\v\$%(\d+|\*)' nextgroup=@tcshModifiers
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162
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163 " Modifiable Variables with {}.
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164 syn match tcshUsrVar contained '\v\$\{\h\w*%(\[\d+%(-\d+)?\])?%(:\S*)?\}' contains=@tcshModifiers,tcshShellVar,tcshEnvVar
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165 syn match tcshArgv contained '\v\$\{%(\d+|\*)%(:\S*)?\}' contains=@tcshModifiers
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166
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167 " Un-modifiable Substitutions. Order is important here.
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168 syn match tcshSubst contained '\v\$[?#$!_<]' nextgroup=tcshModifierError
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169 syn match tcshSubst contained '\v\$[%#?]%(\h\w*|\d+)' nextgroup=tcshModifierError contains=tcshShellVar,tcshEnvVar
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170 syn match tcshSubst contained '\v\$\{[%#?]%(\h\w*|\d+)%(:\S*)?\}' contains=tcshModifierError contains=tcshShellVar,tcshEnvVar
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171
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172 " Variable Name Expansion Modifiers (order important)
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173 syn match tcshModifierError contained '\v:\S*'
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174 syn match tcshModifier contained '\v:[ag]?[htreuls&qx]' nextgroup=@tcshModifiers
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175
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176 " ----- Operators / Specials ----- {{{1
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177 " Standard redirects (except <<) [<, >, >>, >>&, >>!, >>&!]
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178 syn match tcshRedir contained '\v\<|\>\>?\&?!?'
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179
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180 " Meta-chars
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181 syn match tcshMeta contained '\v[]{}*?[]'
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182
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183 " Here documents (<<)
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184 syn region tcshHereDoc contained matchgroup=tcshShellVar start='\v\<\<\s*\z(\h\w*)' end='^\z1$' contains=@tcshVarList,tcshSpecial
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185 syn region tcshHereDoc contained matchgroup=tcshShellVar start="\v\<\<\s*'\z(\h\w*)'" start='\v\<\<\s*"\z(\h\w*)"$' start='\v\<\<\s*\\\z(\h\w*)$' end='^\z1$'
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186
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187 " Operators
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188 syn match tcshOperator contained '&&\|!\~\|!=\|<<\|<=\|==\|=\~\|>=\|>>\|\*\|\^\|\~\|||\|!\|%\|&\|+\|-\|/\|<\|>\||'
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189 "syn match tcshOperator contained '[(){}]'
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190
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191 " Numbers
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192 syn match tcshNumber contained '\v<-?\d+>'
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193
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194 " Arguments
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195 syn match tcshArgument contained '\v\s@<=-(\w|-)*'
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196
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197 " Special characters. \xxx, or backslashed characters.
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198 "syn match tcshSpecial contained '\v\\@<!\\(\d{3}|.)'
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199 syn match tcshSpecial contained '\v\\%([0-7]{3}|.)'
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200
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201 " ----- Synchronising ----- {{{1
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202 if exists('tcsh_minlines')
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203 if tcsh_minlines == 'fromstart'
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204 syn sync fromstart
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205 else
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206 exec 'syn sync minlines=' . tcsh_minlines
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207 endif
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208 else
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209 syn sync minlines=100 " Some completions can be quite long
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210 endif
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211
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212 " ----- Highlighting ----- {{{1
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213 " Define highlighting of syntax groups
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214 hi def link tcshError Error
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215 hi def link tcshBuiltin Statement
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216 hi def link tcshShellVar Preproc
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217 hi def link tcshEnvVar tcshShellVar
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218 hi def link tcshAliases tcshShellVar
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219 hi def link tcshAliCmd Identifier
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220 hi def link tcshCommands Identifier
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221 hi def link tcshIf tcshBuiltin
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222 hi def link tcshWhile tcshBuiltin
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223 hi def link tcshBindkeyFuncs Function
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224 hi def link tcshExprStart tcshBuiltin
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225 hi def link tcshExprVar tcshUsrVar
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226 hi def link tcshExprOp tcshOperator
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227 hi def link tcshExprEnd tcshOperator
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228 hi def link tcshComment Comment
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229 hi def link tcshCommentTi Preproc
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230 hi def link tcshSharpBang tcshCommentTi
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231 hi def link tcshTodo Todo
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232 hi def link tcshSQuote Constant
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233 hi def link tcshDQuote tcshSQuote
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234 hi def link tcshBQuoteGrp Include
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235 hi def link tcshVarError Error
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236 hi def link tcshUsrVar Type
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237 hi def link tcshArgv tcshUsrVar
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238 hi def link tcshSubst tcshUsrVar
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239 hi def link tcshModifier tcshArgument
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240 hi def link tcshModifierError tcshVarError
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241 hi def link tcshMeta tcshSubst
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242 hi def link tcshRedir tcshOperator
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243 hi def link tcshHereDoc tcshSQuote
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244 hi def link tcshOperator Operator
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245 hi def link tcshNumber Number
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246 hi def link tcshArgument Special
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247 hi def link tcshSpecial SpecialChar
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248 " }}}
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249
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250 let &cpo = s:oldcpo
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251 unlet s:oldcpo
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252
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253 let b:current_syntax = 'tcsh'
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254
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255 " vim: nowrap sw=2 sts=2 ts=8 noet fdm=marker:
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