feat(cli)!: add `omz reload` command and deprecate `zsh_reload` plugin (#9078)

BREAKING CHANGE: the `zsh_reload` plugin is deprecated. Instead of using its `src`
function, use `omz reload` or `exec zsh` to reload zsh after making changes to
your `.zshrc` file.

Closes #9078

lib/cli.zsh

@@ -26,6 +26,7 @@ function _omz {
     'help:Usage information'
     'plugin:Manage plugins'
     'pr:Manage Oh My Zsh Pull Requests'
+    'reload:Reload the current zsh session'
     'theme:Manage themes'
     'update:Update Oh My Zsh'
   )
@@ -159,6 +160,7 @@ Available commands:
   changelog           Print the changelog
   plugin <command>    Manage plugins
   pr     <command>    Manage Oh My Zsh Pull Requests
+  reload              Reload the current zsh session
   theme  <command>    Manage themes
   update              Update Oh My Zsh
 
@@ -598,6 +600,16 @@ function _omz::pr::test {
   )
 }
 
+function _omz::reload {
+  # Delete current completion cache
+  command rm -f $_comp_dumpfile $ZSH_COMPDUMP
+
+  # Old zsh versions don't have ZSH_ARGZERO
+  local zsh="${ZSH_ARGZERO:-${functrace[-1]%:*}}"
+  # Check whether to run a login shell
+  [[ "$zsh" = -* || -o login ]] && exec -l "${zsh#-}" || exec "$zsh"
+}
+
 function _omz::theme {
   (( $# > 0 && $+functions[_omz::theme::$1] )) || {
     cat >&2 <<EOF

plugins/zsh_reload/README.md

@@ -1,23 +1,3 @@
 # zsh_reload plugin
 
-The zsh_reload plugin defines a function to reload the zsh session with
-just a few keystrokes.
-
-To use it, add `zsh_reload` to the plugins array in your zshrc file:
-
-```zsh
-plugins=(... zsh_reload)
-```
-
-## Usage
-
-To reload the zsh session, just run `src`:
-
-```zsh
-$ vim ~/.zshrc  # enabled a plugin
-$ src
-re-compiling /home/user/.zshrc.zwc: succeeded
-re-compiling /home/user/.oh-my-zsh/cache/zcomp-host.zwc: succeeded
-
-# you now have a fresh zsh session. happy hacking!
-```
+**This plugin is deprecated.** Use `omz reload` or `exec zsh` instead.

plugins/zsh_reload/zsh_reload.plugin.zsh

@@ -1,22 +1,7 @@
-src() {
-	local cache="$ZSH_CACHE_DIR"
-	autoload -U compinit zrecompile
-	compinit -i -d "$cache/zcomp-$HOST"
-
-	for f in ${ZDOTDIR:-~}/.zshrc "$cache/zcomp-$HOST"; do
-		zrecompile -p $f && command rm -f $f.zwc.old
-	done
+print ${(%):-"%F{yellow}The \`zsh_reload\` plugin is deprecated and will be removed."}
+print ${(%):-"Use \`%Bomz reload%b\` or \`%Bexec zsh%b\` instead.%f"}
 
-	# Use $SHELL if it's available and a zsh shell
-	local shell="$ZSH_ARGZERO"
-	if [[ "${${SHELL:t}#-}" = zsh ]]; then
-		shell="$SHELL"
-	fi
-
-	# Remove leading dash if login shell and run accordingly
-	if [[ "${shell:0:1}" = "-" ]]; then
-		exec -l "${shell#-}"
-	else
-		exec "$shell"
-	fi
+src() {
+  print ${(%):-"%F{yellow}$0 is deprecated. Use \`%Bomz reload%b\` or \`%Bexec zsh%b\` instead.%f\n"}
+  omz reload
 }