vis-menu: improve empty prompt handling (vis-menu -p '')

The textw{,n} functions should probably be changed to not
accomodate for leading and trailing spaces. They should also
be changed to properly calculate the display width of an UTF-8
encoded string. Currently they will just return the number of
codepoints which is obviously wrong.

1 files changed, 2 insertions, 0 deletions

diff --git a/vis-menu.c b/vis-menu.c
index 5c08f6e..a316240 100644
--- a/vis-menu.c
+++ b/vis-menu.c
@@ -585,6 +585,8 @@ main(int argc, char **argv) {
 			usage();
 		} else if (!strcmp(argv[i], "-p")) {
 			prompt = argv[++i];
+			if (prompt && !prompt[0])
+				prompt = NULL;
 		} else if (!strcmp(argv[i], "-l")) {
 			lines = atoi(argv[++i]);
 		} else {