Unly use classifications in ls if stdout is a tty

darcs-hash:20060919165317-ac50b-c7923c7f5900ecc9814756743e6b0345efa382c5.gz

share/functions/isatty.fish

@@ -0,0 +1,28 @@
+
+function isatty -d "Tests if a file descriptor is a tty"
+	set -l fd 0
+	if count $argv >/dev/null 
+		switch $argv[1]
+
+			case -h --h --he --hel --help
+				help isatty
+
+			case stdin
+				set fd 0
+
+			case stdout
+				set fd 1
+
+			case stderr
+				set fd 2
+
+			case '*'
+				set fd $argv[1]
+			
+		end
+	end
+
+	eval "tty 0>&$fd >/dev/null"; and return 0
+
+	return 1
+end