Add command to cd back to HOME

Original patch written by Richard Hyde and taken from
https://github.com/RichardHyde/noice

config.def.h

@@ -56,6 +56,7 @@ struct key bindings[] = {
 	{ '$',            SEL_END },
 	/* Change dir */
 	{ 'c',            SEL_CD },
+	{ '~',            SEL_CDHOME },
 	/* Toggle hide .dot files */
 	{ '.',            SEL_TOGGLEDOT },
 	/* Toggle sort by time */

noice.1

@@ -1,4 +1,4 @@
-.Dd November 26, 2015
+.Dd February 25, 2016
 .Dt NOICE 1
 .Os
 .Sh NAME
@@ -49,6 +49,8 @@ Back up one directory level.
 Change filter (see below for more information).
 .It Ic c
 Change into the given directory.
+.It Ic ~
+Change to the HOME directory.
 .It Ic \&.
 Toggle hide .dot files.
 .It Ic t

noice.c

@@ -57,6 +57,7 @@ enum action {
 	SEL_HOME,
 	SEL_END,
 	SEL_CD,
+	SEL_CDHOME,
 	SEL_TOGGLEDOT,
 	SEL_MTIME,
 	SEL_REDRAW,
@@ -707,6 +708,21 @@ nochange:
 			strlcpy(fltr, ifilter, sizeof(fltr))
 			DPRINTF_S(path);
 			goto begin;
+		case SEL_CDHOME:
+			tmp = getenv("HOME");
+			if (tmp == NULL) {
+				clearprompt();
+				goto nochange;
+			}
+			if (canopendir(tmp) == 0) {
+				printwarn();
+				goto nochange;
+			}
+			strlcpy(path, tmp, sizeof(path));
+			/* Reset filter */
+			strlcpy(fltr, ifilter, sizeof(fltr));
+			DPRINTF_S(path);
+			goto begin;
 		case SEL_TOGGLEDOT:
 			if (strcmp(fltr, ifilter) != 0)
 				strlcpy(fltr, ifilter, sizeof(fltr));