make: Fix handling comments inside rules

A line consisting only of blanks or comments should not end a rule,
even if it doesn't start with a tabulation character.

tagmanager/ctags/make.c

@@ -59,12 +59,10 @@ static void skipLine (void)
 		fileUngetc (c);
 }
 
-static int skipToNonWhite (void)
+static int skipToNonWhite (int c)
 {
-	int c;
-	do
+	while (c != '\n' && isspace (c))
 		c = nextChar ();
-	while (c != '\n' && isspace (c));
 	return c;
 }
 
@@ -138,12 +136,12 @@ static void findMakeTags (void)
 		{
 			if (in_rule)
 			{
-				if (c == '\t')
+				if (c == '\t' || (c = skipToNonWhite (c)) == '#')
 				{
-					skipLine ();  /* skip rule */
+					skipLine ();  /* skip rule or comment */
 					c = nextChar ();
 				}
-				else
+				else if (c != '\n')
 					in_rule = FALSE;
 			}
 			stringListClear (identifiers);
@@ -198,7 +196,7 @@ static void findMakeTags (void)
 				else if (! strcmp (vStringValue (name), "define"))
 				{
 					in_define = TRUE;
-					c = skipToNonWhite ();
+					c = skipToNonWhite (nextChar ());
 					vStringClear (name);
 					/* all remaining characters on the line are the name -- even spaces */
 					while (c != EOF && c != '\n')

tests/ctags/Makefile.am

@@ -200,6 +200,7 @@ test_sources = \
 	line_directives.c				\
 	local.c							\
 	macros.c						\
+	make-comment-in-rule.mak		\
 	make-multi-target.mak			\
 	make-target-with-parentheses.mak	\
 	make-variable-on-cmdline.mak	\

tests/ctags/make-comment-in-rule.mak

@@ -0,0 +1,17 @@
+# all this is one single rule
+all:
+	a=1; echo "$$a"
+# foo
+	b=2; echo "$$b"
+  # foo
+	c=3; echo "$$c"
+# foo
+	d=4; echo "$$d"
+# foo
+	e=5; echo "$$e"
+
+
+	f=6; echo "$$f"
+ # foo
+
+	g=7; echo "$$g"

tests/ctags/make-comment-in-rule.mak.tags

@@ -0,0 +1,2 @@
+# format=tagmanager
+allÌ16Ö0