Add fish support

samples/fish/eval.fish

@@ -0,0 +1,28 @@
+
+function eval -S -d "Evaluate parameters as a command"
+
+	# If we are in an interactive shell, eval should enable full
+	# job control since it should behave like the real code was
+	# executed.  If we don't do this, commands that expect to be
+	# used interactively, like less, wont work using eval.
+
+	set -l mode
+	if status --is-interactive-job-control
+		set mode interactive
+	else
+		if status --is-full-job-control
+			set mode full
+		else
+			set mode none
+		end
+	end
+	if status --is-interactive
+		status --job-control full
+	end
+
+	echo "begin; $argv ;end eval2_inner <&3 3<&-" | . 3<&0
+	set -l res $status
+
+	status --job-control $mode
+	return $res
+end