Add fish config

config/fish/functions/cd.fish

@@ -0,0 +1,51 @@
+function cd --description 'Change directory'
+	set -l MAX_DIR_HIST 25
+
+	if test (count $argv) -gt 1
+		printf "%s\n" (_ "Too many args for cd command")
+		return 1
+	end
+
+	# Skip history in subshells.
+	if status --is-command-substitution
+		builtin cd $argv
+		return $status
+	end
+
+	# Avoid set completions.
+	set -l previous $PWD
+
+	if test "$argv" = "-"
+		if test "$__fish_cd_direction" = "next"
+			nextd
+		else
+			prevd
+		end
+		return $status
+	end
+
+	# allow explicit "cd ." if the mount-point became stale in the meantime
+	if test "$argv" = "."
+		cd "$PWD"
+		return $status
+	end
+
+	builtin cd $argv
+	set -l cd_status $status
+
+	if test $cd_status -eq 0 -a "$PWD" != "$previous"
+		set -q dirprev
+		or set -l dirprev
+		set -q dirprev[$MAX_DIR_HIST]
+		and set -e dirprev[1]
+		set -g -a dirprev $previous
+		set -e dirnext
+		set -g __fish_cd_direction prev
+	end
+
+	if test $cd_status -eq 0
+		ls
+	end
+
+	return $cd_status
+end