conf: try to give better hints if keysyms were mistyped

We can now check keysym names on case-insensitive basis. We can use this
to try to give hints to the user what they probably meant when mistyping a
keysym name.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>

diff --git a/src/conf.c b/src/conf.c
index c69311e..ef65eed 100644 (file)
--- a/src/conf.c
+++ b/src/conf.c
@@ -860,6 +860,7 @@ static int parse_single_grab(char *arg, unsigned int *mods,
                             uint32_t *keysym, bool allow_mods)
 {
        char *tmp, *start, *end;
+       char buf[128];
 
        tmp = arg;
        do {
@@ -920,7 +921,16 @@ static int parse_single_grab(char *arg, unsigned int *mods,
 
        *keysym = xkb_keysym_from_name(start, 0);
        if (!*keysym) {
-               log_error("invalid key '%s'", start);
+               *keysym = xkb_keysym_from_name(start,
+                                              XKB_KEYSYM_CASE_INSENSITIVE);
+               if (!*keysym) {
+                       log_error("invalid key '%s'", start);
+                       return -EFAULT;
+               }
+
+               xkb_keysym_get_name(*keysym, buf, sizeof(buf));
+               log_warning("invalid keysym '%s', did you mean '%s'? (keysyms are case-sensitive)",
+                           start, buf);
                return -EFAULT;
        }