fish: use old bind syntax unless fish v4

fish/conf.d/abbr.fish

@@ -24,5 +24,10 @@ abbr -a gr 'git restore'
 abbr -a gs 'git status'
 abbr -a gst 'git stash'
 abbr -a gsw 'git switch'
-abbr -a --command git rbi 'rebase --interactive'
-abbr -a --command git wipe 'restore --staged --worktree'
+
+set -l major_version (string sub --length 1 $version)
+
+if test $major_version -gt 4
+    abbr -a --command git rbi 'rebase --interactive'
+    abbr -a --command git wipe 'restore --staged --worktree'
+end

fish/config.fish

@@ -34,9 +34,16 @@ if status --is-interactive
     set -g __fish_git_prompt_color_upstream yellow
 
     # Bindings
+    set -l major_version (string sub --length 1 $version)
+    if test $major_version -ge 4
         bind ctrl-q fkill
         bind ctrl-p __fzf_files
         bind ctrl-g __fzf_git_log
+    else
+        bind \cq fkill
+        bind \cp __fzf_files
+        bind \cg __fzf_git_log
+    end
 
     # You can get the cancelled command with ctrl-z now
     #bind ctrl-c __fish_cancel_commandline
@@ -44,13 +51,21 @@ if status --is-interactive
     # Shell history
     if command -q atuin
         atuin init fish --disable-up-arrow | source
+    else
+        if test $major_version -ge 4
+            bind ctrl-r __fzf_history
         else
             bind \cr __fzf_history
         end
+    end
 
     # By default, Ctrl+L clears the screen
     # Add binding Ctrl+Alt+L to clear screen AND scrollback buffer
+    if test $major_version -ge 4
+        bind ctrl-alt-l 'clear; commandline -f repaint'
+    else
         bind \e\f 'clear; commandline -f repaint'
+    end
 end
 
 if not set -q __universals_initialized