fix: autoreload when directory is root (#498)

for cases like "/file", `base - filepath` will result in 0
instead of 1.

regression introduced in: 94d531fd827457cf71fe7f3808c7a2f531dceba5

Reviewed-on: https://codeberg.org/nsxiv/nsxiv/pulls/498
Reviewed-by: eylles <eylles@noreply.codeberg.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/autoreload.c b/autoreload.c
index 8b3f6da..8325210 100644
--- a/autoreload.c
+++ b/autoreload.c
@@ -86,7 +86,7 @@ void arl_add(arl_t *arl, const char *filepath)
 
 	base = strrchr(filepath, '/');
 	assert(base != NULL); /* filepath must be result of `realpath(3)` */
-	dir = arl_scratch_push(filepath, base - filepath);
+	dir = arl_scratch_push(filepath, MAX(base - filepath, 1));
 	add_watch(arl->fd, &arl->wd_dir, dir, IN_CREATE | IN_MOVED_TO);
 	arl->filename = arl_scratch_push(base + 1, strlen(base + 1));
 }