patch 8.0.1353: QuickFixCmdPost is not used consistently

Problem:    QuickFixCmdPost is not used consistently.
Solution:   Invoke QuickFixCmdPost consistently after QuickFixCmdPre.
            (Yegappan Lakshmanan, closes #2377)

src/quickfix.c

@@ -4055,6 +4055,7 @@ ex_cfile(exarg_T *eap)
 #ifdef FEAT_AUTOCMD
     char_u	*au_name = NULL;
 #endif
+    int		res;
 
     if (eap->cmdidx == CMD_lfile || eap->cmdidx == CMD_lgetfile
 					       || eap->cmdidx == CMD_laddfile)
@@ -4102,28 +4103,18 @@ ex_cfile(exarg_T *eap)
      * :caddfile adds to an existing quickfix list. If there is no
      * quickfix list then a new list is created.
      */
-    if (qf_init(wp, p_ef, p_efm, (eap->cmdidx != CMD_caddfile
-				  && eap->cmdidx != CMD_laddfile),
-						       *eap->cmdlinep, enc) > 0
-				  && (eap->cmdidx == CMD_cfile
-					     || eap->cmdidx == CMD_lfile))
-    {
+    res = qf_init(wp, p_ef, p_efm, (eap->cmdidx != CMD_caddfile
+			&& eap->cmdidx != CMD_laddfile), *eap->cmdlinep, enc);
 #ifdef FEAT_AUTOCMD
     if (au_name != NULL)
 	apply_autocmds(EVENT_QUICKFIXCMDPOST, au_name, NULL, FALSE, curbuf);
 #endif
+    if (res > 0 && (eap->cmdidx == CMD_cfile || eap->cmdidx == CMD_lfile))
+    {
 	if (wp != NULL)
 	    qi = GET_LOC_LIST(wp);
 	qf_jump(qi, 0, 0, eap->forceit);	/* display first error */
     }
-
-    else
-    {
-#ifdef FEAT_AUTOCMD
-	if (au_name != NULL)
-	    apply_autocmds(EVENT_QUICKFIXCMDPOST, au_name, NULL, FALSE, curbuf);
-#endif
-    }
 }
 
 /*
@@ -5450,6 +5441,7 @@ ex_cbuffer(exarg_T *eap)
 #ifdef FEAT_AUTOCMD
     char_u	*au_name = NULL;
 #endif
+    int		res;
 
     if (eap->cmdidx == CMD_lbuffer || eap->cmdidx == CMD_lgetbuffer
 	    || eap->cmdidx == CMD_laddbuffer)
@@ -5509,22 +5501,21 @@ ex_cbuffer(exarg_T *eap)
 		qf_title = IObuff;
 	    }
 
-	    if (qf_init_ext(qi, qi->qf_curlist, NULL, buf, NULL, p_efm,
+	    res = qf_init_ext(qi, qi->qf_curlist, NULL, buf, NULL, p_efm,
 			    (eap->cmdidx != CMD_caddbuffer
 			     && eap->cmdidx != CMD_laddbuffer),
 						   eap->line1, eap->line2,
-						   qf_title, NULL) > 0)
-	    {
+						   qf_title, NULL);
 #ifdef FEAT_AUTOCMD
 	    if (au_name != NULL)
 		apply_autocmds(EVENT_QUICKFIXCMDPOST, au_name,
 						curbuf->b_fname, TRUE, curbuf);
 #endif
-		if (eap->cmdidx == CMD_cbuffer || eap->cmdidx == CMD_lbuffer)
+	    if (res > 0 && (eap->cmdidx == CMD_cbuffer ||
+						eap->cmdidx == CMD_lbuffer))
 		qf_jump(qi, 0, 0, eap->forceit);  /* display first error */
 	}
     }
-    }
 }
 
 #if defined(FEAT_EVAL) || defined(PROTO)
@@ -5540,6 +5531,7 @@ ex_cexpr(exarg_T *eap)
 #ifdef FEAT_AUTOCMD
     char_u	*au_name = NULL;
 #endif
+    int		res;
 
     if (eap->cmdidx == CMD_lexpr || eap->cmdidx == CMD_lgetexpr
 	    || eap->cmdidx == CMD_laddexpr)
@@ -5578,21 +5570,20 @@ ex_cexpr(exarg_T *eap)
 	if ((tv->v_type == VAR_STRING && tv->vval.v_string != NULL)
 		|| (tv->v_type == VAR_LIST && tv->vval.v_list != NULL))
 	{
-	    if (qf_init_ext(qi, qi->qf_curlist, NULL, NULL, tv, p_efm,
+	    res = qf_init_ext(qi, qi->qf_curlist, NULL, NULL, tv, p_efm,
 			    (eap->cmdidx != CMD_caddexpr
 			     && eap->cmdidx != CMD_laddexpr),
 				 (linenr_T)0, (linenr_T)0, *eap->cmdlinep,
-				 NULL) > 0)
-	    {
+				 NULL);
 #ifdef FEAT_AUTOCMD
 	    if (au_name != NULL)
 		apply_autocmds(EVENT_QUICKFIXCMDPOST, au_name,
 						curbuf->b_fname, TRUE, curbuf);
 #endif
-		if (eap->cmdidx == CMD_cexpr || eap->cmdidx == CMD_lexpr)
+	    if (res > 0 && (eap->cmdidx == CMD_cexpr ||
+						eap->cmdidx == CMD_lexpr))
 		qf_jump(qi, 0, 0, eap->forceit);  /* display first error */
 	}
-	}
 	else
 	    EMSG(_("E777: String or List expected"));
 	free_tv(tv);

src/testdir/test_quickfix.vim

@@ -1966,26 +1966,136 @@ func Test_Autocmd()
   cexpr "F1:10:Line 10"
   caddexpr "F1:20:Line 20"
   cgetexpr "F1:30:Line 30"
-  enew! | call append(0, "F2:10:Line 10")
-  cbuffer!
-  enew! | call append(0, "F2:20:Line 20")
-  cgetbuffer
-  enew! | call append(0, "F2:30:Line 30")
-  caddbuffer
-
+  cexpr ""
+  caddexpr ""
+  cgetexpr ""
+  silent! cexpr non_existing_func()
+  silent! caddexpr non_existing_func()
+  silent! cgetexpr non_existing_func()
   let l = ['precexpr',
 	      \ 'postcexpr',
 	      \ 'precaddexpr',
 	      \ 'postcaddexpr',
 	      \ 'precgetexpr',
 	      \ 'postcgetexpr',
-	      \ 'precbuffer',
+	      \ 'precexpr',
+	      \ 'postcexpr',
+	      \ 'precaddexpr',
+	      \ 'postcaddexpr',
+	      \ 'precgetexpr',
+	      \ 'postcgetexpr',
+	      \ 'precexpr',
+	      \ 'precaddexpr',
+	      \ 'precgetexpr']
+  call assert_equal(l, g:acmds)
+
+  let g:acmds = []
+  enew! | call append(0, "F2:10:Line 10")
+  cbuffer!
+  enew! | call append(0, "F2:20:Line 20")
+  cgetbuffer
+  enew! | call append(0, "F2:30:Line 30")
+  caddbuffer
+  new
+  let bnum = bufnr('%')
+  bunload
+  exe 'silent! cbuffer! ' . bnum
+  exe 'silent! cgetbuffer ' . bnum
+  exe 'silent! caddbuffer ' . bnum
+  enew!
+  let l = ['precbuffer',
 	      \ 'postcbuffer',
 	      \ 'precgetbuffer',
 	      \ 'postcgetbuffer',
 	      \ 'precaddbuffer',
-	      \ 'postcaddbuffer']
+	      \ 'postcaddbuffer',
+	      \ 'precbuffer',
+	      \ 'precgetbuffer',
+	      \ 'precaddbuffer']
   call assert_equal(l, g:acmds)
+
+  call writefile(['Xtest:1:Line1'], 'Xtest')
+  call writefile([], 'Xempty')
+  let g:acmds = []
+  cfile Xtest
+  caddfile Xtest
+  cgetfile Xtest
+  cfile Xempty
+  caddfile Xempty
+  cgetfile Xempty
+  silent! cfile do_not_exist
+  silent! caddfile do_not_exist
+  silent! cgetfile do_not_exist
+  let l = ['precfile',
+	      \ 'postcfile',
+	      \ 'precaddfile',
+	      \ 'postcaddfile',
+	      \ 'precgetfile',
+	      \ 'postcgetfile',
+	      \ 'precfile',
+	      \ 'postcfile',
+	      \ 'precaddfile',
+	      \ 'postcaddfile',
+	      \ 'precgetfile',
+	      \ 'postcgetfile',
+	      \ 'precfile',
+	      \ 'postcfile',
+	      \ 'precaddfile',
+	      \ 'postcaddfile',
+	      \ 'precgetfile',
+	      \ 'postcgetfile']
+  call assert_equal(l, g:acmds)
+
+  let g:acmds = []
+  helpgrep quickfix
+  silent! helpgrep non_existing_help_topic
+  vimgrep test Xtest
+  vimgrepadd test Xtest
+  silent! vimgrep non_existing_test Xtest
+  silent! vimgrepadd non_existing_test Xtest
+  set makeprg=
+  silent! make
+  set makeprg&
+  let l = ['prehelpgrep',
+	      \ 'posthelpgrep',
+	      \ 'prehelpgrep',
+	      \ 'posthelpgrep',
+	      \ 'previmgrep',
+	      \ 'postvimgrep',
+	      \ 'previmgrepadd',
+	      \ 'postvimgrepadd',
+	      \ 'previmgrep',
+	      \ 'postvimgrep',
+	      \ 'previmgrepadd',
+	      \ 'postvimgrepadd',
+	      \ 'premake',
+	      \ 'postmake']
+  call assert_equal(l, g:acmds)
+
+  if has('unix')
+    " Run this test only on Unix-like systems. The grepprg may not be set on
+    " non-Unix systems.
+    " The following lines are used for the grep test. Don't remove.
+    " Grep_Autocmd_Text: Match 1
+    " GrepAdd_Autocmd_Text: Match 2
+    let g:acmds = []
+    silent grep Grep_Autocmd_Text test_quickfix.vim
+    silent grepadd GrepAdd_Autocmd_Text test_quickfix.vim
+    silent grep abc123def Xtest
+    silent grepadd abc123def Xtest
+    let l = ['pregrep',
+		\ 'postgrep',
+		\ 'pregrepadd',
+		\ 'postgrepadd',
+		\ 'pregrep',
+		\ 'postgrep',
+		\ 'pregrepadd',
+		\ 'postgrepadd']
+    call assert_equal(l, g:acmds)
+  endif
+
+  call delete('Xtest')
+  call delete('Xempty')
 endfunc
 
 func Test_Autocmd_Exception()

src/version.c

@@ -771,6 +771,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1353,
 /**/
     1352,
 /**/