调整 fish 配置

dot_config/fish/config.fish

@@ -1,19 +1,21 @@
 if status is-interactive
-    # Commands to run in interactive sessions can go here
+    # Abbreviations (only when target commands exist)
+    if type -q eza
+        abbr ls eza
+    else if type -q exa
+        abbr ls exa
+    end
+    type -q bat; and abbr cat bat
+    type -q bat; and abbr cap bat -p
+    type -q fd; and abbr find fd
+    type -q rg; and abbr grep rg
+    type -q btop; and abbr top btop
+    type -q tldr; and abbr help tldr
+    type -q chezmoi; and abbr cz chezmoi
+
+    type -q thefuck; and thefuck --alias | source
+
+    type -q zoxide; and zoxide init --cmd=cd fish | source
+
+    type -q fastfetch; and fastfetch
 end
-
-# Aliases
-alias ls=exa
-alias cat=bat
-alias cap='cat -p'
-alias find=fd
-alias grep=rg
-alias top=btop
-alias help=tldr
-abbr cz chezmoi
-
-thefuck --alias | source
-
-zoxide init fish | source
-
-fastfetch