make grepformat local to buffer

runtime/doc/options.txt

@@ -4062,7 +4062,7 @@ A jump table for the options with a short description can be found at |Q_op|.
 
 						*'grepformat'* *'gfm'*
 'grepformat' 'gfm'	string	(default "%f:%l:%m,%f:%l%m,%f  %l%m")
-			global
+			global or local to buffer |global-local|
 	Format to recognize for the ":grep" command output.
 	This is a scanf-like string that uses the same format as the
 	'errorformat' option: see |errorformat|.

src/buffer.c

@@ -2508,6 +2508,7 @@ free_buf_options(
     free_callback(&buf->b_tsrfu_cb);
 #endif
 #ifdef FEAT_QUICKFIX
+    clear_string_option(&buf->b_p_gefm);
     clear_string_option(&buf->b_p_gp);
     clear_string_option(&buf->b_p_mp);
     clear_string_option(&buf->b_p_efm);

src/option.c

@@ -6429,6 +6429,9 @@
 	case PV_EFM:
 	    clear_string_option(&buf->b_p_efm);
 	    break;
+	case PV_GEFM:
+	    clear_string_option(&buf->b_p_gefm);
+	    break;
 	case PV_GP:
 	    clear_string_option(&buf->b_p_gp);
 	    break;
@@ -6508,6 +6511,7 @@
 #endif
 #ifdef FEAT_QUICKFIX
 	    case PV_EFM:  return (char_u *)&(curbuf->b_p_efm);
+	    case PV_GEFM: return (char_u *)&(curbuf->b_p_gefm);
 	    case PV_GP:   return (char_u *)&(curbuf->b_p_gp);
 	    case PV_MP:   return (char_u *)&(curbuf->b_p_mp);
 #endif
@@ -6626,6 +6630,8 @@
 #ifdef FEAT_QUICKFIX
 	case PV_EFM:	return *curbuf->b_p_efm != NUL
 				    ? (char_u *)&(curbuf->b_p_efm) : p->var;
+	case PV_GEFM:	return *curbuf->b_p_gefm != NUL
+				    ? (char_u *)&(curbuf->b_p_gefm) : p->var;
 	case PV_GP:	return *curbuf->b_p_gp != NUL
 				    ? (char_u *)&(curbuf->b_p_gp) : p->var;
 	case PV_MP:	return *curbuf->b_p_mp != NUL
@@ -7415,6 +7421,7 @@
 	    buf->b_p_bkc = empty_option;
 	    buf->b_bkc_flags = 0;
 #ifdef FEAT_QUICKFIX
+	    buf->b_p_gefm = empty_option;
 	    buf->b_p_gp = empty_option;
 	    buf->b_p_mp = empty_option;
 	    buf->b_p_efm = empty_option;

src/option.h

@@ -1157,6 +1157,7 @@ enum
     , BV_BT
 #ifdef FEAT_QUICKFIX
     , BV_EFM
+    , BV_GEFM
     , BV_GP
     , BV_MP
 #endif

src/optiondefs.h

@@ -33,6 +33,7 @@
 #define PV_BT		OPT_BUF(BV_BT)
 #ifdef FEAT_QUICKFIX
 # define PV_EFM		OPT_BOTH(OPT_BUF(BV_EFM))
+# define PV_GEFM	OPT_BOTH(OPT_BUF(BV_GEFM))
 # define PV_GP		OPT_BOTH(OPT_BUF(BV_GP))
 # define PV_MP		OPT_BOTH(OPT_BUF(BV_MP))
 #endif
@@ -1154,7 +1155,7 @@ static struct vimoption options[] =
 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
     {"grepformat",  "gfm",  P_STRING|P_VI_DEF|P_ONECOMMA|P_NODUP,
 #ifdef FEAT_QUICKFIX
-			    (char_u *)&p_gefm, PV_NONE, NULL, NULL,
+			    (char_u *)&p_gefm, PV_GEFM, NULL, NULL,
 			    {(char_u *)DFLT_GREPFORMAT, (char_u *)0L}
 #else
 			    (char_u *)NULL, PV_NONE, NULL, NULL,

src/optionstr.c

@@ -327,6 +327,7 @@ check_buf_options(buf_T *buf)
     check_string_option(&buf->b_p_keymap);
 #endif
 #ifdef FEAT_QUICKFIX
+    check_string_option(&buf->b_p_gefm);
     check_string_option(&buf->b_p_gp);
     check_string_option(&buf->b_p_mp);
     check_string_option(&buf->b_p_efm);

src/quickfix.c

@@ -5503,7 +5503,7 @@ ex_make(exarg_T *eap)
     incr_quickfix_busy();
 
     if (eap->cmdidx != CMD_make && eap->cmdidx != CMD_lmake)
-	errorformat = p_gefm;
+	errorformat =  *curbuf->b_p_gefm != NUL ? curbuf->b_p_gefm : p_gefm;
     if (eap->cmdidx == CMD_grepadd || eap->cmdidx == CMD_lgrepadd)
 	newlist = FALSE;
 

src/structs.h

@@ -3371,6 +3371,7 @@ struct file_buffer
      * local values for options which are normally global
      */
 #ifdef FEAT_QUICKFIX
+    char_u	*b_p_gefm;	// 'grepformat' local value
     char_u	*b_p_gp;	// 'grepprg' local value
     char_u	*b_p_mp;	// 'makeprg' local value
     char_u	*b_p_efm;	// 'errorformat' local value

src/testdir/test_quickfix.vim

@@ -2379,6 +2379,25 @@ func Test_grep()
   call s:test_xgrep('l')
 endfunc
 
+func Test_local_grepformat()
+  let save_grepformat = &grepformat
+  set grepformat=%f:%l:%m
+  " The following line are used for the local grep test. Don't remove.
+  " UNIQUEPREFIX:2:3: Local grepformat test
+  new
+  setlocal grepformat=UNIQUEPREFIX:%c:%n:%m
+  call assert_equal('UNIQUEPREFIX:%c:%n:%m', &l:grepformat)
+  call assert_equal('%f:%l:%m', &g:grepformat)
+
+  set grepprg=internal
+  silent grep "^[[:space:]]*\" UNIQUEPREFIX:" test_quickfix.vim
+  call assert_equal(1, len(getqflist()))
+  set grepprg&vim
+
+  bwipe!
+  let &grepformat = save_grepformat
+endfunc
+
 func Test_two_windows()
   " Use one 'errorformat' for two windows.  Add an expression to each of them,
   " make sure they each keep their own state.