Pass given file names to key-handler instead of real paths

Misbehaving command lines in the key-handler that rewrite the given files and
thus replace symbolic links instead of their targets shall call realpath(1).

Fixes issue #205 and reverts commit 92e3b578.

Makefile

@@ -1,4 +1,4 @@
-VERSION   := git-20161228
+VERSION   := git-20170107
 
 PREFIX    := /usr/local
 MANPREFIX := $(PREFIX)/share/man

exec/key-handler

@@ -18,7 +18,7 @@ readonly TMPFILE="/tmp/sxiv.$$"
 
 rotate() {
 	degree="$1"
-	while read file; do
+	tr '\n' \0' | xargs -0 realpath | sort | uniq | while read file; do
 		case "$(file -b -i "$file")" in
 		image/jpeg*) jpegtran -rotate "$degree" -copy all -outfile "$file" "$file" ;;
 		*)           mogrify  -rotate "$degree" "$file" ;;

main.c

@@ -525,7 +525,7 @@ void run_key_handler(const char *key, unsigned int mask)
 	for (f = i = 0; f < fcnt; i++) {
 		if ((marked && (files[i].flags & FF_MARK)) || (!marked && i == fileidx)) {
 			stat(files[i].path, &oldst[f]);
-			fprintf(pfs, "%s\n", files[i].path);
+			fprintf(pfs, "%s\n", files[i].name);
 			f++;
 		}
 	}