Merge branch 'ms/maint-config-error-at-eol-linecount'

When "git config" diagnoses an error in a configuration file and
shows the line number for the offending line, it miscounted if the
error was at the end of line.

By Martin Stenberg
* ms/maint-config-error-at-eol-linecount:
  config: report errors at the EOL with correct line number

Conflicts:
	t/t1300-repo-config.sh

config.c

@@ -196,8 +196,10 @@ static char *parse_value(void)
 	for (;;) {
 		int c = get_next_char();
 		if (c == '\n') {
-			if (quote)
+			if (quote) {
+				cf->linenr--;
 				return NULL;
+			}
 			return cf->value.buf;
 		}
 		if (comment)
@@ -287,7 +289,7 @@ static int get_extended_base_var(char *name, int baselen, int c)
 {
 	do {
 		if (c == '\n')
-			return -1;
+			goto error_incomplete_line;
 		c = get_next_char();
 	} while (isspace(c));
 
@@ -299,13 +301,13 @@ static int get_extended_base_var(char *name, int baselen, int c)
 	for (;;) {
 		int c = get_next_char();
 		if (c == '\n')
-			return -1;
+			goto error_incomplete_line;
 		if (c == '"')
 			break;
 		if (c == '\\') {
 			c = get_next_char();
 			if (c == '\n')
-				return -1;
+				goto error_incomplete_line;
 		}
 		name[baselen++] = c;
 		if (baselen > MAXNAME / 2)
@@ -316,6 +318,9 @@ static int get_extended_base_var(char *name, int baselen, int c)
 	if (get_next_char() != ']')
 		return -1;
 	return baselen;
+error_incomplete_line:
+	cf->linenr--;
+	return -1;
 }
 
 static int get_base_var(char *name)

t/t1300-repo-config.sh

@@ -985,4 +985,35 @@ test_expect_success 'git config --edit respects core.editor' '
 	test_cmp expect actual
 '
 
+# malformed configuration files
+test_expect_success 'barf on syntax error' '
+	cat >.git/config <<-\EOF &&
+	# broken section line
+	[section]
+	key garbage
+	EOF
+	test_must_fail git config --get section.key >actual 2>error &&
+	grep " line 3 " error
+'
+
+test_expect_success 'barf on incomplete section header' '
+	cat >.git/config <<-\EOF &&
+	# broken section line
+	[section
+	key = value
+	EOF
+	test_must_fail git config --get section.key >actual 2>error &&
+	grep " line 2 " error
+'
+
+test_expect_success 'barf on incomplete string' '
+	cat >.git/config <<-\EOF &&
+	# broken section line
+	[section]
+	key = "value string
+	EOF
+	test_must_fail git config --get section.key >actual 2>error &&
+	grep " line 3 " error
+'
+
 test_done