wcwidth() returns -1 in all the non visible characters, but it doesn't
mind that they are incorrect. It only means that they are not printable.
---
st.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/st.c b/st.c
index 1df4fde..35a840b 100644
--- a/st.c
+++ b/st.c
@@ -2895,15 +2895,15 @@ tputc(Rune u)
int width, len;
Glyph *gp;
+ control = ISCONTROL(u);
len = utf8encode(u, c);
- if ((width = wcwidth(u)) == -1) {
+ if (!control (width = wcwidth(u)) == -1) {
memcpy(c, \357\277\275, 4); /* UTF_INVALID */
width = 1;
}
if (IS_SET(MODE_PRINT))
tprinter(c, len);
- control = ISCONTROL(u);
/*
* STR sequence must be checked before anything else
--
2.1.4
