From: kay.sievers@vrfy.org <kay.sievers@vrfy.org>
Date: Sat, 26 Feb 2005 01:52:04 +0000 (+0100)
Subject: [PATCH] namedev: skip backslashes only if followed by newline
X-Git-Tag: 054~2
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=commitdiff_plain;h=77313cd0d13ed3682f25c745f71f648292b28215

[PATCH] namedev: skip backslashes only if followed by newline

Fix from: Hannes Reinecke <hare@suse.de>
namedev_parse is a bit overzealous when in comes to handling backspaces;
it always eats up backspaces regardless of anything beyond that. This
means it is impossible to enter '\t' in a rule. Quite a bit of fun when
you're trying to write regexps.
---

diff --git a/namedev_parse.c b/namedev_parse.c
index 7cd676c39..02d8a6520 100644
--- a/namedev_parse.c
+++ b/namedev_parse.c
@@ -153,7 +153,7 @@ static int namedev_parse(const char *filename, void *data)
 
 		/* skip backslash and newline from multi line rules */
 		for (i = j = 0; i < count; i++) {
-			if (bufline[i] == '\\' || bufline[i] == '\n')
+			if (bufline[i] == '\\' && bufline[i+1] == '\n')
 				continue;
 
 			line[j++] = bufline[i];
diff --git a/test/udev-test.pl b/test/udev-test.pl
index fe7b93266..f442b162e 100644
--- a/test/udev-test.pl
+++ b/test/udev-test.pl
@@ -192,6 +192,15 @@ EOF
 KERNEL="ttyUSB0", \\
 NAME="visor"
 
+EOF
+	},
+	{
+		desc		=> "preserve backslashes, if they are not for a newline",
+		subsys		=> "tty",
+		devpath		=> "/class/tty/ttyUSB0",
+		exp_name	=> "aaa",
+		conf		=> <<EOF
+KERNEL="ttyUSB0", PROGRAM="/bin/echo -e \\101", RESULT="A", NAME="aaa"
 EOF
 	},
 	{