svn commit: r248777 - head/usr.sbin/config

[Jung-uk Kim]

Author: jkim
Date: Tue Mar 26 23:58:13 2013
New Revision: 248777
URL: http://svnweb.freebsd.org/changeset/base/248777

Log:
  Loosen restrictions for quoted strings.  Now we can use more complex strings
  and "escaped" quote characters.
  
  MFC after:	1 month

Modified:
  head/usr.sbin/config/main.c

Modified: head/usr.sbin/config/main.c
==============================================================================
--- head/usr.sbin/config/main.c	Tue Mar 26 23:11:30 2013	(r248776)
+++ head/usr.sbin/config/main.c	Tue Mar 26 23:58:13 2013	(r248777)
@@ -351,16 +351,24 @@ begin:
 	if (ch == '"' || ch == '\'') {
 		int quote = ch;
 
+		escaped_nl = 0;
 		while ((ch = getc(fp)) != EOF) {
-			if (ch == quote)
+			if (ch == quote && !escaped_nl)
 				break;
-			if (ch == '\n') {
+			if (ch == '\n' && !escaped_nl) {
 				*cp = 0;
 				printf("config: missing quote reading `%s'\n",
 					line);
 				exit(2);
 			}
+			if (ch == '\\' && !escaped_nl) {
+				escaped_nl = 1;
+				continue;
+			}
+			if (ch != quote && escaped_nl)
+				*cp++ = '\\';
 			*cp++ = ch;
+			escaped_nl = 0;
 		}
 	} else {
 		*cp++ = ch;