Index: fish/config.fish
==================================================================
--- fish/config.fish
+++ fish/config.fish
@@ -21,10 +21,11 @@
 set -g fish_color_user 00ff00
 set -g fish_color_valid_path normal
 set -g fish_color_vcs 43d696
 set -g fish_color_vcs_braces 29bc7d
 
+set -g _fish_abbr_fsl fossil
 set -g _fish_abbr_gpg gpg2
 set -g _fish_abbr_vi vim
 
 test -n "$XDG_CONFIG_HOME"
 or set -x XDG_CONFIG_HOME $HOME/.config

ADDED   fish/functions/fsld.fish
Index: fish/functions/fsld.fish
==================================================================
--- fish/functions/fsld.fish
+++ fish/functions/fsld.fish
@@ -0,0 +1,3 @@
+function fsld
+    fossil diff $argv | colordiff | less -FRX
+end