From f3e5c3032fa7f799d618873e878ccad7284fbb98 Mon Sep 17 00:00:00 2001
From: ceriel <none@none>
Date: Fri, 24 Jan 1992 13:05:30 +0000
Subject: [PATCH] differing characters should be left untouched

---
 lang/cem/libcc.ansi/stdio/doscan.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lang/cem/libcc.ansi/stdio/doscan.c b/lang/cem/libcc.ansi/stdio/doscan.c
index 7a95d4cd6..c0957cb25 100644
--- a/lang/cem/libcc.ansi/stdio/doscan.c
+++ b/lang/cem/libcc.ansi/stdio/doscan.c
@@ -204,7 +204,11 @@ _doscan(register FILE *stream, const char *format, va_list ap)
 		if (*format != '%') {
 			ic = getc(stream);
 			nrchars++;
-			if (ic != *format++) break;	/* error */
+			if (ic != *format++) {
+				if (ic != EOF) ungetc(ic,stream);
+				nrchars--;
+				break;	/* error */
+			}
 			continue;
 		}
 		format++;
-- 
2.34.1