tcsh: preserve any existing `precmd` alias

CHANGELOG.md

@@ -31,6 +31,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Zsh: avoid inserting a trailing space when cancelling interactive Space-Tab completions.
 - Bash: avoid blanking the prompt when cancelling interactive Space-Tab completions.
 - Bash/Fish/Zsh: avoid drawing a new line when Space-Tab completion finds no matches.
+- Tcsh: preserve any existing `precmd` alias instead of overwriting it.
 
 ## [0.9.9] - 2026-01-31
 

templates/tcsh.txt

@@ -23,7 +23,15 @@ alias __zoxide_hook 'set __zoxide_pwd_tmp = "`{{ pwd_cmd }}`"; test "$__zoxide_p
 {%- endif %}
 
 # Initialize hook.
-alias precmd ';__zoxide_hook'
+set __zoxide_precmd = "`alias precmd`"
+if ( "$__zoxide_precmd" !~ *__zoxide_hook* ) then
+    if ( "$__zoxide_precmd" == "" ) then
+        alias precmd '__zoxide_hook'
+    else
+        alias precmd "$__zoxide_precmd"';__zoxide_hook'
+    endif
+endif
+unset __zoxide_precmd
 
 {%- endif %}