patch 7.4.741 Problem: When using += with ":set" a trailing comma is not recognized. (Issue 365) Solution: Don't add a second comma. Add a test. (partly by Christian Brabandt)

src/option.c

@@ -4897,6 +4897,10 @@ do_set(arg, opt_flags)
 				if (adding)
 				{
 				    i = (int)STRLEN(origval);
+				    /* strip a trailing comma, would get 2 */
+				    if (comma && i > 1 && origval[i - 1] == ','
+						    && origval[i - 2] != '\\')
+					i--;
 				    mch_memmove(newval + i + comma, newval,
 							  STRLEN(newval) + 1);
 				    mch_memmove(newval, origval, (size_t)i);

src/testdir/Make_amiga.mak

@@ -54,6 +54,7 @@ SCRIPTS = test1.out test3.out test4.out test5.out test6.out \
 		test_nested_function.out \
 		test_options.out \
 		test_qf_title.out \
+		test_set.out \
 		test_signs.out \
 		test_textobjects.out \
 		test_utf8.out
@@ -198,6 +199,7 @@ test_marks.out: test_marks.in
 test_nested_function.out: test_nested_function.in
 test_options.out: test_options.in
 test_qf_title.out: test_qf_title.in
+test_set.out: test_set.in
 test_signs.out: test_signs.in
 test_textobjects.out: test_textobjects.in
 test_utf8.out: test_utf8.in

src/testdir/Make_dos.mak

@@ -53,6 +53,7 @@ SCRIPTS =	test3.out test4.out test5.out test6.out test7.out \
 		test_nested_function.out \
 		test_options.out \
 		test_qf_title.out \
+		test_set.out \
 		test_signs.out \
 		test_textobjects.out \
 		test_utf8.out

src/testdir/Make_ming.mak

@@ -75,6 +75,7 @@ SCRIPTS =	test3.out test4.out test5.out test6.out test7.out \
 		test_nested_function.out \
 		test_options.out \
 		test_qf_title.out \
+		test_set.out \
 		test_signs.out \
 		test_textobjects.out \
 		test_utf8.out

src/testdir/Make_os2.mak

@@ -55,6 +55,7 @@ SCRIPTS = test1.out test3.out test4.out test5.out test6.out \
 		test_nested_function.out \
 		test_options.out \
 		test_qf_title.out \
+		test_set.out \
 		test_signs.out \
 		test_textobjects.out \
 		test_utf8.out

src/testdir/Make_vms.mms

@@ -4,7 +4,7 @@
 # Authors:	Zoltan Arpadffy, <arpadffy@polarhome.com>
 #		Sandor Kopanyi,  <sandor.kopanyi@mailbox.hu>
 #
-# Last change:  2015 Apr 21
+# Last change:  2015 Jun 19
 #
 # This has been tested on VMS 6.2 to 8.3 on DEC Alpha, VAX and IA64.
 # Edit the lines in the Configuration section below to select.
@@ -114,6 +114,7 @@ SCRIPT = test1.out  test2.out  test3.out  test4.out  test5.out  \
 	 test_nested_function.out \
 	 test_options.out \
 	 test_qf_title.out \
+	 test_set.out \
 	 test_signs.out \
 	 test_textobjects.out \
 	 test_utf8.out

src/testdir/Makefile

@@ -51,6 +51,7 @@ SCRIPTS = test1.out test2.out test3.out test4.out test5.out test6.out \
 		test_nested_function.out \
 		test_options.out \
 		test_qf_title.out \
+		test_set.out \
 		test_signs.out \
 		test_textobjects.out \
 		test_utf8.out

src/version.c

@@ -756,6 +756,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    741,
 /**/
     740,
 /**/