SyntasticInfo: more details about modes. Minor cleanup.

plugin/syntastic.vim

@@ -19,7 +19,7 @@ if has('reltime')
     lockvar! g:syntastic_start
 endif
 
-let g:syntastic_version = '3.4.0-99'
+let g:syntastic_version = '3.4.0-100'
 lockvar g:syntastic_version
 
 " Sanity checks {{{1
@@ -168,7 +168,7 @@ command! -nargs=* -complete=custom,s:CompleteCheckerName SyntasticCheck
             \ call syntastic#util#redraw(g:syntastic_full_redraws)
 command! Errors call s:ShowLocList()
 command! -nargs=? -complete=custom,s:CompleteFiletypes SyntasticInfo
-            \ call s:modemap.echoMode() |
+            \ call s:modemap.modeInfo(<f-args>) |
             \ call s:registry.echoInfoFor(s:resolveFiletypes(<f-args>))
 command! SyntasticReset
             \ call s:ClearCache() |

plugin/syntastic/modemap.vim

@@ -62,6 +62,27 @@ function! g:SyntasticModeMap.echoMode() " {{{2
     echo "Syntastic: " . self._mode . " mode enabled"
 endfunction " }}}2
 
+function! g:SyntasticModeMap.modeInfo(...) " {{{2
+    echomsg 'Syntastic version: ' . g:syntastic_version
+    let type = a:0 ? a:1 : &filetype
+    echomsg 'Info for filetype: ' . type
+
+    call self.synch()
+    echomsg 'Mode: ' . self._mode
+    if self._mode ==# 'active'
+        if len(self._passiveFiletypes)
+            let plural = len(self._passiveFiletypes) != 1 ? 's' : ''
+            echomsg 'Passive filetype' . plural . ': ' . join(sort(copy(self._passiveFiletypes)))
+        endif
+    else
+        if len(self._activeFiletypes)
+            let plural = len(self._activeFiletypes) != 1 ? 's' : ''
+            echomsg 'Active filetype' . plural . ': ' . join(sort(copy(self._activeFiletypes)))
+        endif
+    endif
+    echomsg 'Current filetype is ' . (self.allowsAutoChecking(type) ? 'active' : 'passive')
+endfunction " }}}2
+
 " }}}1
 
 " Private methods {{{1

plugin/syntastic/registry.vim

@@ -179,9 +179,6 @@ function! g:SyntasticRegistry.getNamesOfAvailableCheckers(ftalias) " {{{2
 endfunction " }}}2
 
 function! g:SyntasticRegistry.echoInfoFor(ftalias_list) " {{{2
-    echomsg "Syntastic version: " . g:syntastic_version
-    echomsg "Info for filetype: " . join(a:ftalias_list, '.')
-
     let ft_list = syntastic#util#unique(map( copy(a:ftalias_list), 's:normaliseFiletype(v:val)' ))
     if len(ft_list) != 1
         let available = []
@@ -197,8 +194,15 @@ function! g:SyntasticRegistry.echoInfoFor(ftalias_list) " {{{2
         let active = map(self.getCheckersAvailable(ft, []), 'v:val.getName()')
     endif
 
-    echomsg "Available checker(s): " . join(sort(available))
-    echomsg "Currently enabled checker(s): " . join(active)
+    let cnt = len(available)
+    let plural = cnt != 1 ? 's' : ''
+    let cklist = cnt ? join(sort(available)) : '-'
+    echomsg 'Available checker' . plural . ': ' . cklist
+
+    let cnt = len(active)
+    let plural = cnt != 1 ? 's' : ''
+    let cklist = cnt ? join(active) : '-'
+    echomsg 'Currently enabled checker' . plural . ': ' . cklist
 endfunction " }}}2
 
 " }}}1