check for gawk and cleanup comments

ftdetect/logrotate.vim

@@ -1,3 +1,3 @@
 
-au BufNewFile,BufRead */logrotate.d/*,logrotate.conf setfiletype logrotate
+autocmd BufNewFile,BufRead */logrotate.d/*,logrotate.conf setfiletype logrotate
 

ftplugin/logrotate.vim

@@ -7,26 +7,36 @@ if exists("b:did_ftplugin")
 endif
 b:did_ftplugin = 1
 
-def LogrotateHelp(word: string)
+b:undo_ftplugin = "setlocal comments< commentstring< formatoptions< omnifunc<"
-    const searchcmd =<< trim END
-        COLUMNS=80 man logrotate 2>/dev/null | 
-        gawk '/^CONFIGURATION FILE DIRECTIVES/,/^SCRIPTS/' | gawk '
-        /^ {7}%s/,/^[a-z]/ {
-            if(firstLineDone) {
-                if(/^ {0,7}[^ ]/ && !/endscript/)
-                    exit
-            }
-            firstLineDone = 1
-            print(substr($0, 8))
-        }'
-    END
-    printf(join(searchcmd, "\n"), word)
-        ->systemlist()
-        ->popup_atcursor({ "padding": [0, 1, 1, 1] })
-enddef
 
-command -nargs=1 LogRt :call LogrotateHelp(<f-args>)
+var awkcmd: string 
 
-b:undo_ftplugin = "setlocal comments< commentstring< formatoptions< keywordprg<"
+if exists("g:logrotate_awk")
+    awkcmd = g:logrotate_awk
+else
+    awkcmd = "gawk"
+endif
+# Have to use gawk, default awk (mawk) does not support {0,7} syntax
+if executable(awkcmd)
+    def LogrotateHelp(word: string)
+        const searchcmd =<< trim eval END
+            COLUMNS=80 man logrotate 2>/dev/null | 
+            {awkcmd} '/^CONFIGURATION FILE DIRECTIVES/,/^SCRIPTS/' | {awkcmd} '
+            /^ {{7}}%s/,false {{
+                if(firstLineDone && /^ {{0,7}}[^ ]/ && !/endscript/) exit
+                firstLineDone = 1
+                print(substr($0, 8))
+            }}'
+        END
+        printf(join(searchcmd, "\n"), word)
+            ->systemlist()
+            ->popup_atcursor({ "padding": [0, 1, 1, 1] })
+    enddef
 
-setlocal comments=:# commentstring=#\ %s formatoptions-=t formatoptions+=croql keywordprg=:LogRt
+    command -nargs=1 LogRotateHelpCmd :call LogrotateHelp(<f-args>)
+    setlocal keywordprg=:LogRotateHelpCmd
+    b:undo_ftplugin = b:undo_ftplugin .. " keywordprg<"
+endif
+
+setlocal omnifunc=syntaxcomplete#Complete
+setlocal comments=:# commentstring=#\ %s formatoptions-=t formatoptions+=croql

syntax/logrotate.vim

@@ -1,21 +1,19 @@
 " Vim syntax file
 " Language: logrotate
 
-" Quit if a syntax file was already loaded
 if exists("b:current_syntax")
     finish
 endif
 
-syn include @logRotateSh syntax/sh.vim
+syntax include @logRotateSh syntax/sh.vim
 unlet b:current_syntax
 
-syn region logRotateScript matchgroup=logRotateKeyword start="\s*\<\%(firstaction\|lastaction\|prerotate\|postrotate\|preremove\)\>" end="\<endscript\>" contains=@logRotateSh
+syntax region logRotateScript matchgroup=logRotateKeyword start="\s*\<\%(firstaction\|lastaction\|prerotate\|postrotate\|preremove\)\>" end="\<endscript\>" contains=@logRotateSh
 
+" for comments, todo, string
 runtime! syntax/conf.vim
 
-" syn keyword logRotateTodo   contained TODO FIXME XXX
+syntax keyword logRotateKeyword  addextension allowhardlink compress compresscmd
-
-syn keyword logRotateKeyword  addextension allowhardlink compress compresscmd
             \ compressext compressoptions copy copytruncate create createolddir
             \ daily dateext dateformat datehourago dateyesterday delaycompress
             \ endscript extension firstaction hourly ifempty include lastaction
@@ -27,18 +25,6 @@ syn keyword logRotateKeyword  addextension allowhardlink compress compresscmd
             \ shred shredcycles size start su tabooext taboopat uncompresscmd
             \ weekly yearly
 
-" String
+highlight default link logRotateKeyword Keyword
-" syn region  logRotateString start=+"+ skip=+\\\\\|\\"+ end=+"+ oneline
-" syn region  logRotateString start=+'+ skip=+\\\\\|\\'+ end=+'+ oneline
-
-" syn match   logRotateComment    "^#.*" contains=logRotateTodo,logRotateString,@Spell
-" syn match   logRotateComment    "\s#.*"ms=s+1 contains=logRotateTodo,logRotateString,@Spell
-
-hi def link logRotateKeyword Keyword
-" hi def link logRotateString String
-" hi def link logRotateComment Comment
-" hi def link logRotateTodo   Todo
-
-" hi def link logRotateScript Function
 
 let b:current_syntax = 'logrotate'