Index: io.c
===================================================================
RCS file: /cvs/src/bin/ksh/io.c,v
diff -u -p -u -p -r1.38 io.c
--- io.c	24 Jul 2019 14:33:16 -0000	1.38
+++ io.c	5 Jan 2024 20:02:04 -0000
@@ -149,6 +149,20 @@ shellf(const char *fmt, ...)
 	shf_flush(shl_out);
 }
 
+/* printf to shl_out (stderr) without flush */
+void
+shellnof(const char *fmt, ...)
+{
+	va_list va;
+
+	if (!initio_done) /* shl_out may not be set up yet... */
+		return;
+	va_start(va, fmt);
+	shf_vfprintf(shl_out, fmt, va);
+	va_end(va);
+}
+
+
 /* printf to shl_stdout (stdout) */
 void
 shprintf(const char *fmt, ...)
Index: lex.c
===================================================================
RCS file: /cvs/src/bin/ksh/lex.c,v
diff -u -p -u -p -r1.79 lex.c
--- lex.c	8 Feb 2023 17:22:10 -0000	1.79
+++ lex.c	5 Jan 2024 20:02:05 -0000
@@ -1157,6 +1157,19 @@ getsc_line(Source *s)
 			s->line++;
 			histsave(s->line, s->str, 1);
 		}
+		/* Set xterm title */
+		char *d = str_val(global("DISPLAY"));
+		char str[41];
+		memset(str, '\0', 41);
+		for (int i=0; i<40; i++) {
+			str[i] = p[i];
+			if ( (str[i] > 0x7e) || (str[i] < 0x20)) {
+				str[i] = '\0';
+				break;
+			}
+		}
+		if(d[0])
+			shellf("%c]0;$ %s%c", '\033', str, '\007');
 	}
 	if (interactive)
 		set_prompt(PS2);
Index: main.c
===================================================================
RCS file: /cvs/src/bin/ksh/main.c,v
diff -u -p -u -p -r1.100 main.c
--- main.c	23 Jul 2023 23:42:03 -0000	1.100
+++ main.c	5 Jan 2024 20:02:05 -0000
@@ -623,6 +623,12 @@ shell(Source *volatile s, volatile int t
 			mcheck();
 #endif /* SMALL */
 			set_prompt(PS1);
+			/* Reset xterm title */
+			char *d = str_val(global("DISPLAY"));
+			if(d[0] > 0) {
+				shellnof("%c]0;$ ksh (%s)%c",
+					'\033', current_wd, '\007');
+			}
 		}
 
 		t = compile(s);
Index: sh.h
===================================================================
RCS file: /cvs/src/bin/ksh/sh.h,v
diff -u -p -u -p -r1.77 sh.h
--- sh.h	21 Jun 2023 22:22:08 -0000	1.77
+++ sh.h	5 Jan 2024 20:02:05 -0000
@@ -474,6 +474,8 @@ void	internal_warningf(const char *, ...
 void	error_prefix(int);
 void	shellf(const char *, ...)
 	    __attribute__((__format__ (printf, 1, 2)));
+void	shellnof(const char *, ...)
+	    __attribute__((__format__ (printf, 1, 2)));
 void	shprintf(const char *, ...)
 	    __attribute__((__format__ (printf, 1, 2)));
 #ifdef KSH_DEBUG