a tad annoying, when external programmes such as GNU screen are running,

we don’t get SIGWINCH when the window size changes during the runtime of
that, so, the signal is only usable reliably during editing in the shell
and we re-check the window size before each interactive edit line again

lex.c

@@ -22,7 +22,7 @@
 
 #include "sh.h"
 
-__RCSID("$MirOS: src/bin/mksh/lex.c,v 1.117 2010/07/21 11:31:15 tg Exp $");
+__RCSID("$MirOS: src/bin/mksh/lex.c,v 1.118 2010/07/25 11:35:41 tg Exp $");
 
 /*
  * states while lexing word
@@ -1385,6 +1385,8 @@ getsc_line(Source *s)
 		ksh_tmout_state = TMOUT_READING;
 		alarm(ksh_tmout);
 	}
+	if (interactive)
+		change_winsz();
 	if (have_tty && (
 #if !MKSH_S_NOVI
 	    Flag(FVI) ||
@@ -1398,11 +1400,9 @@ getsc_line(Source *s)
 		xp[nread] = '\0';
 		xp += nread;
 	} else {
-		if (interactive) {
-			if (got_winch)
-				change_winsz();
+		if (interactive)
 			pprompt(prompt, 0);
-		} else
+		else
 			s->line++;
 
 		while (1) {