update prezto

.zprezto/modules/homebrew/README.md

@@ -1,7 +1,16 @@
 Homebrew
 ========
 
-Defines Homebrew aliases.
+Defines Homebrew specific environment variables and aliases.
+
+Variables
+---------
+
+Execute the following to list the environment variables loaded in the shell:
+
+```sh
+brew shellenv
+```
 
 Aliases
 -------
@@ -20,12 +29,9 @@ Aliases
 ### Homebrew Cask
 
   - `cask` is aliased to `brew cask`.
-  - `caskc` cleans up old cached downloads.
-  - `caskC` cleans up all cached downloads.
   - `caski` installs a cask.
   - `caskl` lists installed casks.
   - `casko` lists casks which have an update available.
-  - `casks` searches for a cask.
   - `caskx` uninstalls a cask.
 
 Authors

.zprezto/modules/homebrew/init.zsh

@@ -10,6 +10,16 @@ if [[ "$OSTYPE" != (darwin|linux)* ]]; then
   return 1
 fi
 
+#
+# Variables
+#
+
+# Load standard Homebrew shellenv into the shell session.
+# `brew shellenv` is relatively new, guard for legacy Homebrew.
+if (( $+commands[brew] )); then
+  eval "$(brew shellenv 2> /dev/null)"
+fi
+
 #
 # Aliases
 #
@@ -21,15 +31,26 @@ alias brewi='brew install'
 alias brewl='brew list'
 alias brewo='brew outdated'
 alias brews='brew search'
-alias brewu='brew update && brew upgrade'
-alias brewx='brew remove'
+alias brewu='brew upgrade'
+alias brewx='brew uninstall'
 
 # Homebrew Cask
 alias cask='brew cask'
-alias caskc='brew cask cleanup --outdated'
-alias caskC='brew cask cleanup'
+alias caskc='hb_deprecated brew cask cleanup'
+alias caskC='hb_deprecated brew cask cleanup'
 alias caski='brew cask install'
 alias caskl='brew cask list'
 alias casko='brew cask outdated'
-alias casks='brew cask search'
+alias casks='hb_deprecated brew cask search'
 alias caskx='brew cask uninstall'
+
+function hb_deprecated {
+  local cmd="${argv[3]}"
+  local cmd_args=( ${(@)argv:4} )
+
+  printf "'brew cask %s' has been deprecated, " "${cmd}"
+  printf "using 'brew %s' instead\n" "${cmd}"
+
+  cmd_args=( ${(@)argv:4} )
+  command brew "${cmd}" ${(@)cmd_args}
+}