Checker chktex: fix column handling.

doc/syntastic-checkers.txt

@@ -6379,6 +6379,14 @@ Default: 1
 Whether to show informational messages ("chktex" option "-m"). By default
 informational messages are shown as warnings.
 
+Note~
+
+If you're checking files containing tab characters, then Vim's 'tabstop'
+must match "ChkTeX"'s idea of tabstop, otherwise column numbers will be
+shifted. At the time of this writing, "ChkTeX"'s tabstop is hardcoded to 8,
+so you should probably add something like this to your vimrc: >
+    set tabstop=8
+<
 ------------------------------------------------------------------------------
 2. lacheck                                             *syntastic-tex-lacheck*
 

plugin/syntastic.vim

@@ -19,7 +19,7 @@ if has('reltime')
     lockvar! g:_SYNTASTIC_START
 endif
 
-let g:_SYNTASTIC_VERSION = '3.8.0-65'
+let g:_SYNTASTIC_VERSION = '3.8.0-69'
 lockvar g:_SYNTASTIC_VERSION
 
 " Sanity checks {{{1

syntax_checkers/tex/chktex.vim

@@ -27,12 +27,12 @@ let s:save_cpo = &cpo
 set cpo&vim
 
 function! SyntaxCheckers_tex_chktex_GetLocList() dict
-    let makeprg = self.makeprgBuild({ 'args_after': "-q -f \"%k:%n:%f:%l:%c:%m\n\"" })
+    let makeprg = self.makeprgBuild({ 'args_after': ['-q', '-f', "%k:%n:%f:%l:%c:%m\n"] })
 
     let errorformat =
-        \ '%EError:%n:%f:%l:%c:%m,' .
+        \ '%EError:%n:%f:%l:%v:%m,' .
-        \ '%WWarning:%n:%f:%l:%c:%m,' .
+        \ '%WWarning:%n:%f:%l:%v:%m,' .
-        \ (g:syntastic_tex_chktex_showmsgs ? '%WMessage:%n:%f:%l:%c:%m,' : '') .
+        \ (g:syntastic_tex_chktex_showmsgs ? '%WMessage:%n:%f:%l:%v:%m,' : '') .
         \ '%Z%p^,' .
         \ '%-G%.%#'