Only touch the option strings if necessary

diff --git a/tig.c b/tig.c
index a3db54baa7c066f0a67dc121f7f967ff5b9abc5b..982c1cc8a0eee0ce591d10fad17838aae2d62e32 100644 (file)
--- a/tig.c
+++ b/tig.c
@@ -845,6 +845,10 @@ struct line {
 };
 
 
+/*
+ * User config file handling.
+ */
+
 #define set_color(color, name, namelen) \
        set_from_int_map(color_map, ARRAY_SIZE(color_map), color, name, namelen)
 
@@ -855,19 +859,20 @@ static int
 read_option(char *opt, int optlen, char *value, int valuelen)
 {
        optlen = strcspn(opt, "#;");
-       if (optlen == 0)
+       if (optlen == 0) {
                /* The whole line is a comment. */
                return OK;
 
-       else if (opt[optlen] != 0)
+       } else if (opt[optlen] != 0) {
                /* Part of the option name is a comment, so the value part
                 * should be ignored. */
                valuelen = 0;
-       else
+               opt[optlen] = value[valuelen] = 0;
+       } else {
                /* Else look for comment endings in the value. */
                valuelen = strcspn(value, "#;");
-
-       opt[optlen] = value[valuelen] = 0;
+               value[valuelen] = 0;
+       }
 
        /* Reads: "color" object fgcolor bgcolor [attr] */
        if (!strcmp(opt, "color")) {