'\' characters in nicks were skipped when sending messages in queries.

git-svn-id: http://svn.irssi.org/repos/irssi/trunk@2867 dbcabf3a-b0e7-0310-adc4-f8d773084564

src/core/misc.c

@@ -770,3 +770,19 @@ int expand_escape(const char **data)
 		return strtol(digit, NULL, 8);
 	}
 }
+
+/* Escape all '"', "'" and '\' chars with '\' */
+char *escape_string(const char *str)
+{
+	char *ret, *p;
+
+	p = ret = g_malloc(strlen(str)*2+1);
+	while (*str != '\0') {
+		if (*str == '"' || *str == '\'' || *str == '\\')
+			*p++ = '\\';
+		*p++ = *str++;
+	}
+	*p = '\0';
+
+	return ret;
+}