patch 7.4.2299

Problem:    QuickFixCmdPre and QuickFixCmdPost autocommands are not always
            triggered.
Solution:   Also trigger on ":expr", ":cbuffer", etc. (Yegappan Lakshmanan)

src/quickfix.c

@@ -4845,6 +4845,9 @@ ex_cbuffer(exarg_T *eap)
 {
     buf_T	*buf = NULL;
     qf_info_T	*qi = &ql_info;
+#ifdef FEAT_AUTOCMD
+    char_u	*au_name = NULL;
+#endif
 
     if (eap->cmdidx == CMD_lbuffer || eap->cmdidx == CMD_lgetbuffer
 	    || eap->cmdidx == CMD_laddbuffer)
@@ -4854,6 +4857,28 @@ ex_cbuffer(exarg_T *eap)
 	    return;
     }
 
+#ifdef FEAT_AUTOCMD
+    switch (eap->cmdidx)
+    {
+	case CMD_cbuffer:	au_name = (char_u *)"cbuffer"; break;
+	case CMD_cgetbuffer:	au_name = (char_u *)"cgetbuffer"; break;
+	case CMD_caddbuffer:	au_name = (char_u *)"caddbuffer"; break;
+	case CMD_lbuffer:	au_name = (char_u *)"lbuffer"; break;
+	case CMD_lgetbuffer:	au_name = (char_u *)"lgetbuffer"; break;
+	case CMD_laddbuffer:	au_name = (char_u *)"laddbuffer"; break;
+	default: break;
+    }
+    if (au_name != NULL)
+    {
+	apply_autocmds(EVENT_QUICKFIXCMDPRE, au_name,
+					       curbuf->b_fname, TRUE, curbuf);
+# ifdef FEAT_EVAL
+	if (did_throw || force_abort)
+	    return;
+# endif
+    }
+#endif
+
     if (*eap->arg == NUL)
 	buf = curbuf;
     else if (*skipwhite(skipdigits(eap->arg)) == NUL)
@@ -4887,10 +4912,16 @@ ex_cbuffer(exarg_T *eap)
 			    (eap->cmdidx != CMD_caddbuffer
 			     && eap->cmdidx != CMD_laddbuffer),
 						   eap->line1, eap->line2,
-						   qf_title) > 0
+						   qf_title) > 0)
-		    && (eap->cmdidx == CMD_cbuffer
+	    {
-			|| eap->cmdidx == CMD_lbuffer))
+#ifdef FEAT_AUTOCMD
-		qf_jump(qi, 0, 0, eap->forceit);  /* display first error */
+		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)
+		    qf_jump(qi, 0, 0, eap->forceit);  /* display first error */
+	    }
 	}
     }
 }
@@ -4905,6 +4936,9 @@ ex_cexpr(exarg_T *eap)
 {
     typval_T	*tv;
     qf_info_T	*qi = &ql_info;
+#ifdef FEAT_AUTOCMD
+    char_u	*au_name = NULL;
+#endif
 
     if (eap->cmdidx == CMD_lexpr || eap->cmdidx == CMD_lgetexpr
 	    || eap->cmdidx == CMD_laddexpr)
@@ -4914,6 +4948,28 @@ ex_cexpr(exarg_T *eap)
 	    return;
     }
 
+#ifdef FEAT_AUTOCMD
+    switch (eap->cmdidx)
+    {
+	case CMD_cexpr:	    au_name = (char_u *)"cexpr"; break;
+	case CMD_cgetexpr:  au_name = (char_u *)"cgetexpr"; break;
+	case CMD_caddexpr:  au_name = (char_u *)"caddexpr"; break;
+	case CMD_lexpr:	    au_name = (char_u *)"lexpr"; break;
+	case CMD_lgetexpr:  au_name = (char_u *)"lgetexpr"; break;
+	case CMD_laddexpr:  au_name = (char_u *)"laddexpr"; break;
+	default: break;
+    }
+    if (au_name != NULL)
+    {
+	apply_autocmds(EVENT_QUICKFIXCMDPRE, au_name,
+					       curbuf->b_fname, TRUE, curbuf);
+# ifdef FEAT_EVAL
+	if (did_throw || force_abort)
+	    return;
+# endif
+    }
+#endif
+
     /* Evaluate the expression.  When the result is a string or a list we can
      * use it to fill the errorlist. */
     tv = eval_expr(eap->arg, NULL);
@@ -4925,10 +4981,16 @@ ex_cexpr(exarg_T *eap)
 	    if (qf_init_ext(qi, NULL, NULL, tv, p_efm,
 			    (eap->cmdidx != CMD_caddexpr
 			     && eap->cmdidx != CMD_laddexpr),
-				 (linenr_T)0, (linenr_T)0, *eap->cmdlinep) > 0
+				 (linenr_T)0, (linenr_T)0, *eap->cmdlinep) > 0)
-		    && (eap->cmdidx == CMD_cexpr
+	    {
-			|| eap->cmdidx == CMD_lexpr))
+#ifdef FEAT_AUTOCMD
-		qf_jump(qi, 0, 0, eap->forceit);  /* display first error */
+		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)
+		    qf_jump(qi, 0, 0, eap->forceit);  /* display first error */
+	    }
 	}
 	else
 	    EMSG(_("E777: String or List expected"));

src/testdir/test_quickfix.vim

@@ -1554,3 +1554,38 @@ function Test_qf_property()
     call Xproperty_tests('c')
     call Xproperty_tests('l')
 endfunction
+
+" Tests for the QuickFixCmdPre/QuickFixCmdPost autocommands
+function QfAutoCmdHandler(loc, cmd)
+  call add(g:acmds, a:loc . a:cmd)
+endfunction
+
+function Test_Autocmd()
+  autocmd QuickFixCmdPre * call QfAutoCmdHandler('pre', expand('<amatch>'))
+  autocmd QuickFixCmdPost * call QfAutoCmdHandler('post', expand('<amatch>'))
+
+  let g:acmds = []
+  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
+
+  let l = ['precexpr',
+	      \ 'postcexpr',
+	      \ 'precaddexpr',
+	      \ 'postcaddexpr',
+	      \ 'precgetexpr',
+	      \ 'postcgetexpr',
+	      \ 'precbuffer',
+	      \ 'postcbuffer',
+	      \ 'precgetbuffer',
+	      \ 'postcgetbuffer',
+	      \ 'precaddbuffer',
+	      \ 'postcaddbuffer']
+  call assert_equal(l, g:acmds)
+endfunction

src/version.c

@@ -763,6 +763,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2299,
 /**/
     2298,
 /**/