unctrl

SCCS-vsn: usr.bin/window/wwmisc.c 1.7

diff --git a/usr/src/usr.bin/window/wwmisc.c b/usr/src/usr.bin/window/wwmisc.c
index b4f928b..ae64ff0 100644 (file)
--- a/usr/src/usr.bin/window/wwmisc.c
+++ b/usr/src/usr.bin/window/wwmisc.c
@@ -1,5 +1,5 @@
 #ifndef lint
 #ifndef lint

-static char *sccsid = "@(#)wwmisc.c    1.6 83/07/22";
+static char *sccsid = "@(#)wwmisc.c    1.7 83/07/28";

 #endif
 
 #include "ww.h"
 #endif
 
 #include "ww.h"


@@ -34,3 +34,27 @@ register id;
                ;
        return w;
 }
                ;
        return w;
 }

+
+char *
+unctrl(c)
+register char c;
+{
+       static char buf[5];
+       register char *p = buf;
+
+       if (c == DEL) {
+               *p++ = '^';
+               *p++ = '?';
+       } else if (c < ' ') {
+               *p++ = '^';
+               *p++ = c + '@';
+       } else if (c > DEL) {
+               *p++ = '\\';
+               *p++ = (c >> 6 & 3) + '0';
+               *p++ = (c >> 3 & 7) + '0';
+               *p++ = (c & 7) + '0';
+       } else
+               *p++ = c;
+       *p = 0;
+       return buf;
+}