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-rw-r--r--st.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/st.c b/st.c
index 814f3f5..d8ff30b 100644
--- a/st.c
+++ b/st.c
@@ -2311,13 +2311,13 @@ techo(char *buf, int len) {
for(; len > 0; buf++, len--) {
char c = *buf;
- if(ISCONTROL(c)) { /* control code */
+ if(ISCONTROL((uchar) c)) { /* control code */
if(c & 0x80) {
c &= 0x7f;
tputc("^", 1);
tputc("[", 1);
} else if(c != '\n' && c != '\r' && c != '\t') {
- c ^= '\x40';
+ c ^= 0x40;
tputc("^", 1);
}
tputc(&c, 1);