isl_arg_parse: delimit string option argument by angle brackets

Signed-off-by: Sven Verdoolaege <skimo@kotnet.org>

diff --git a/isl_arg.c b/isl_arg.c
index 9378583..056a6d5 100644 (file)
--- a/isl_arg.c
+++ b/isl_arg.c
@@ -350,6 +350,12 @@ static void print_bool_help(struct isl_arg *decl, const char *prefix)
        printf("\n");
 }
 
+static int print_argument_name(struct isl_arg *decl, const char *name, int pos)
+{
+       printf("%c<%s>", decl->long_name ? '=' : ' ', name);
+       return pos + 3 + strlen(name);
+}
+
 static void print_long_help(struct isl_arg *decl, const char *prefix)
 {
        int pos;
@@ -383,8 +389,7 @@ static void print_str_help(struct isl_arg *decl, const char *prefix)
        int pos;
        const char *a = decl->argument_name ? decl->argument_name : "string";
        pos = print_arg_help(decl, prefix, 0);
-       printf("=%s", a);
-       pos += 1 + strlen(a);
+       pos = print_argument_name(decl, a, pos);
        print_help_msg(decl, pos);
        printf("\n");
 }