Make the 'closest option' print a bit better

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

diff --git a/parse.c b/parse.c
index 785d5699857963bcc48ee65db160b7cb4336f0e2..ad2b1e3c76cf9a3691a7466598de6823b8064b20 100644 (file)
--- a/parse.c
+++ b/parse.c
@@ -837,7 +837,7 @@ static void print_option(struct fio_option *o)
 int show_cmd_help(struct fio_option *options, const char *name)
 {
        struct fio_option *o, *closest;
-       unsigned int best_dist;
+       unsigned int best_dist = -1U;
        int found = 0;
        int show_all = 0;
 
@@ -890,7 +890,12 @@ int show_cmd_help(struct fio_option *options, const char *name)
                return 0;
 
        printf("No such command: %s", name);
-       if (closest) {
+
+       /*
+        * Only print an appropriately close option, one where the edit
+        * distance isn't too big. Otherwise we get crazy matches.
+        */
+       if (closest && best_dist < 3) {
                printf(" - showing closest match\n");
                printf("%20s: %s\n", closest->name, closest->help);
                show_option_help(closest, stdout);