Merge pull request #699 from roosemberth/master

Sway: Configuration: Support for escaping line breaks.

common/readline.c

@@ -5,17 +5,24 @@
 char *read_line(FILE *file) {
 	size_t length = 0, size = 128;
 	char *string = malloc(size);
+	char lastChar = '\0';
 	if (!string) {
 		return NULL;
 	}
 	while (1) {
 		int c = getc(file);
+		if (c == '\n' && lastChar == '\\'){
+			--length; // Ignore last character.
+			lastChar = '\0';
+			continue;
+		}
 		if (c == EOF || c == '\n' || c == '\0') {
 			break;
 		}
 		if (c == '\r') {
 			continue;
 		}
+		lastChar = c;
 		if (length == size) {
 			char *new_string = realloc(string, size *= 2);
 			if (!new_string) {

sway/sway.5.txt

@@ -16,6 +16,12 @@ on startup.  These commands usually consist of setting your preferences and
 setting key bindings. An example config is likely present in /etc/sway/config
 for you to check out.
 
+Lines in the configuration file might be extended through multiple lines by
+adding a '\' character at the end of line. e.g.:
+
+	bindsym Shift+XF86AudioRaiseVolume exec pactl set-sink-volume \
+		$(pactl list sinks | grep -B 1 RUNNING | sed '1q;d' | sed 's/[^0-9]\+//g') +5%
+
 These commands can be executed in your config file, via **sway-msg**(1), or via
 the bindsym command.