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authorJune McEnroe <june@causal.agency>2021-01-09 17:28:42 -0500
committerJune McEnroe <june@causal.agency>2021-01-09 17:28:42 -0500
commitbf70fcbfedbe544a7e8dd1f444e8abe1bbd31da1 (patch)
tree3d4015a131f569b19b520f7c955bd231f649ecec
parentUse execl rather than execlp for shell (diff)
downloadcatgirl-bf70fcbfedbe544a7e8dd1f444e8abe1bbd31da1.tar.gz
catgirl-bf70fcbfedbe544a7e8dd1f444e8abe1bbd31da1.zip
Count width of 2 for invalid multibyte with high bit
Diffstat (limited to '')
-rw-r--r--buffer.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/buffer.c b/buffer.c
index 15d89f8..bdf9e3a 100644
--- a/buffer.c
+++ b/buffer.c
@@ -123,17 +123,18 @@ static int flow(struct Lines *hard, int cols, const struct Line *soft) {
 		int n = mbtowc(&wc, str, len);
 		if (n < 0) {
 			n = 1;
-			width++;
+			// ncurses will render these as "~A".
+			width += (*str & '\200' ? 2 : 1);
 		} else if (wc == ZWS || wc == ZWNJ) {
-			// XXX: ncurses likes to render these as spaces when they should be
+			// ncurses likes to render these as spaces when they should be
 			// zero-width, so just remove them entirely.
 			memmove(str, &str[n], strlen(&str[n]) + 1);
 			continue;
 		} else if (wc == L'\t') {
-			// XXX: Assuming TABSIZE = 8.
+			// Assuming TABSIZE = 8.
 			width += 8 - (width % 8);
 		} else if (wc < L' ' || wc == L'\177') {
-			// XXX: ncurses will render these as "^A".
+			// ncurses will render these as "^A".
 			width += 2;
 		} else if (wcwidth(wc) > 0) {
 			width += wcwidth(wc);