Merge commit '9d3e2f0204f2de5a0f04da1e0cdcf63e8afe5add'

* commit '9d3e2f0204f2de5a0f04da1e0cdcf63e8afe5add':
  python: Expand compctl matches for pip variants
  command-not-found: Minor reformatting
  homebrew: Load 'HOMEBREW_' prefixed variables only
  homebrew: Simplify array assignment
  archive: Enhance 'archive' helper to support multi file archive
  git: add documentation for new aliases
  Aliases to digital sign/verify commits and tags (sorin-ionescu#651)
  syntax-highlighting: Further clarify relative module ordering
  rsync: Update link to Bombich rsync page again
  node: Make nvm lookup mechanism more efficient in homebrewed environment
  python: Fix pip compctl file match pattern
  command-not-found: Support custom Homebrew tap on MacOS
  node: Cache completion for additional helpers
  python: Use more apropriate filename for pip completion
  python: Make cached completion file mangling more reliable
  command-not-found: Restore idiomatic homebrewed handler loading on MacOS
  Update submodules versions
  Resolves sorin-ionescu#1641 - Roll the pure prompt back from 1.8.0 to 1.7.0
  Update submodules

modules/archive/functions/archive

@@ -8,11 +8,11 @@
 
 # function archive {
 
-local archive_name dir_to_archive _gzip_bin _bzip2_bin
+local archive_name path_to_archive _gzip_bin _bzip2_bin
 
-if (( $# != 2 )); then
+if (( $# < 2 )); then
   cat >&2 <<EOF
-usage: $0 [archive_name.zip] [/path/to/include/into/archive]
+usage: $0 [archive_name.zip] [/path/to/include/into/archive ...]
 
 Where 'archive.zip' uses any of the following extensions:
 
@@ -28,14 +28,8 @@ fi
 
 # strip the path, just in case one is provided for some reason
 archive_name="${1:t}"
-# use absolute paths, and follow symlinks
-dir_to_archive="${2}"
-
-# if the directory doesn't exist, quit. Nothing to archive
-if [[ ! -e "${dir_to_archive}" ]]; then
-  print "$0: file or directory not valid: ${dir_to_archive}" >&2
-  return 1
-fi
+# let paths be handled by actual archive helper
+path_to_archive="${@:2}"
 
 # here, we check for dropin/multi-threaded replacements
 # this should eventually be moved to modules/archive/init.zsh
@@ -53,14 +47,14 @@ else
 fi
 
 case "${archive_name}" in
-  (*.tar.gz|*.tgz) tar -cvf "${archive_name}" --use-compress-program="${_gzip_bin}" "${dir_to_archive}" ;;
-  (*.tar.bz2|*.tbz|*.tbz2) tar -cvf "${archive_name}" --use-compress-program="${_bzip2_bin}" "${dir_to_archive}" ;;
-  (*.tar.xz|*.txz) tar -cvJf "${archive_name}" "${dir_to_archive}" ;;
-  (*.tar.lzma|*.tlz) tar -cvf "${archive_name}" --lzma "${dir_to_archive}" ;;
-  (*.tar) tar -cvf "${archive_name}" "${dir_to_archive}" ;;
-  (*.zip|*.jar) zip -r "${archive_name}" "${dir_to_archive}" ;;
-  (*.rar) rar a "${archive_name}" "${dir_to_archive}" ;;
-  (*.7z) 7za a "${archive_name}" "${dir_to_archive}" ;;
+  (*.tar.gz|*.tgz) tar -cvf "${archive_name}" --use-compress-program="${_gzip_bin}" "${=path_to_archive}" ;;
+  (*.tar.bz2|*.tbz|*.tbz2) tar -cvf "${archive_name}" --use-compress-program="${_bzip2_bin}" "${=path_to_archive}" ;;
+  (*.tar.xz|*.txz) tar -cvJf "${archive_name}" "${=path_to_archive}" ;;
+  (*.tar.lzma|*.tlz) tar -cvf "${archive_name}" --lzma "${=path_to_archive}" ;;
+  (*.tar) tar -cvf "${archive_name}" "${=path_to_archive}" ;;
+  (*.zip|*.jar) zip -r "${archive_name}" "${=path_to_archive}" ;;
+  (*.rar) rar a "${archive_name}" "${=path_to_archive}" ;;
+  (*.7z) 7za a "${archive_name}" "${=path_to_archive}" ;;
   (*.gz) print "\n.gz is only useful for single files, and does not capture permissions. Use .tar.gz" ;;
   (*.bz2) print "\n.bzip2 is only useful for single files, and does not capture permissions. Use .tar.bz2" ;;
   (*.xz) print "\n.xz is only useful for single files, and does not capture permissions. Use .tar.xz" ;;

modules/command-not-found/init.zsh

@@ -12,9 +12,30 @@ if [[ -s '/etc/zsh_command_not_found' ]]; then
 # Load command-not-found on Arch Linux-based distributions.
 elif [[ -s '/usr/share/doc/pkgfile/command-not-found.zsh' ]]; then
   source '/usr/share/doc/pkgfile/command-not-found.zsh'
-# Load command-not-found on macOS when homebrew tap is configured.
-elif [[ -s '/usr/local/Homebrew/Library/Taps/homebrew/homebrew-command-not-found/handler.sh' ]]; then
-  source '/usr/local/Homebrew/Library/Taps/homebrew/homebrew-command-not-found/handler.sh'
+# Load command-not-found on macOS when Homebrew tap is configured.
+# To avoid performance penalty, we do not use Homebrew's ruby based command
+# lookup mechanism (viz., `brew command command-not-found-init`) and instead
+# `find` it ourselves from `TAP_DIRECTORY` defined internally in Homebrew.
+elif (( $+commands[brew] )); then
+  cnf_command=(
+    "$(brew --repository 2> /dev/null)"/Library/Taps/*/*/cmd/brew-command-not-found-init(|.rb)(.N)
+  )
+  if (( $#cnf_command )); then
+    cache_file="${TMPDIR:-/tmp}/prezto-brew-command-not-found-cache.$UID.zsh"
+
+    if [[ "${${(@o)cnf_command}[1]}" -nt "$cache_file" \
+          || "${ZDOTDIR:-$HOME}/.zpreztorc" -nt "$cache_file" \
+          || ! -s "$cache_file" ]]; then
+      # brew command-not-found-init is slow; cache its output.
+      brew command-not-found-init >! "$cache_file" 2> /dev/null
+    fi
+
+    source "$cache_file"
+
+    unset cache_file
+  fi
+
+  unset cnf_command
 # Return if requirements are not found.
 else
   return 1

modules/git/README.md

@@ -81,6 +81,7 @@ zstyle ':prezto:module:git:alias' skip 'yes'
      commits.
   - `gcR` removes the *HEAD* commit.
   - `gcs` displays various types of objects.
+  - `gcsS` displays commits with GPG signature.
   - `gcl` lists lost commits.
   - `gcy` displays commits yet to be applied to upstream in the short format.
   - `gcY` displays commits yet to be applied to upstream.
@@ -220,6 +221,7 @@ zstyle ':prezto:module:git:alias' skip 'yes'
   - `glg` displays the graph log.
   - `glb` displays the brief commit log.
   - `glc` displays the commit count for each contributor in descending order.
+  - `glS` displays the log and checks the validity of signed commits.
 
 ### Merge
 
@@ -295,6 +297,8 @@ zstyle ':prezto:module:git:alias' skip 'yes'
 
   - `gt` lists tags or creates tag.
   - `gtl` lists tags matching pattern.
+  - `gts` creates a signed tag.
+  - `gtv` validate a signed tag.
 
 ### Working directory
 

modules/git/alias.zsh

@@ -68,6 +68,7 @@ if ! zstyle -t ':prezto:module:git:alias' skip 'yes'; then
   alias gcr='git revert'
   alias gcR='git reset "HEAD^"'
   alias gcs='git show'
+  alias gcsS='git show --pretty=short --show-signature'
   alias gcl='git-commit-lost'
   alias gcy='git cherry -v --abbrev'
   alias gcY='git cherry -v'
@@ -190,6 +191,7 @@ if ! zstyle -t ':prezto:module:git:alias' skip 'yes'; then
   alias glg='git log --topo-order --all --graph --pretty=format:"${_git_log_oneline_format}"'
   alias glb='git log --topo-order --pretty=format:"${_git_log_brief_format}"'
   alias glc='git shortlog --summary --numbered'
+  alias glS='git log --show-signature'
 
   # Merge (m)
   alias gm='git merge'
@@ -255,6 +257,8 @@ if ! zstyle -t ':prezto:module:git:alias' skip 'yes'; then
   # Tag (t)
   alias gt='git tag'
   alias gtl='git tag -l'
+  alias gts='git tag -s'
+  alias gtv='git verify-tag'
 
   # Working Copy (w)
   alias gws='git status --ignore-submodules=${_git_status_ignore_submodules} --short'

modules/homebrew/init.zsh

@@ -14,10 +14,11 @@ fi
 # Variables
 #
 
-# Load standard Homebrew shellenv into the shell session.
-# `brew shellenv` is relatively new, guard for legacy Homebrew.
+# Load standard Homebrew shellenv into the shell session. 
+# Load 'HOMEBREW_' prefixed variables only. Avoid loading 'PATH' related
+# variables as they are already handled in standard zsh configuration.
 if (( $+commands[brew] )); then
-  eval "$(brew shellenv 2> /dev/null)"
+  eval "${(@M)${(f)"$(brew shellenv 2> /dev/null)"}:#export HOMEBREW*}"
 fi
 
 #
@@ -45,12 +46,11 @@ alias casks='hb_deprecated brew cask search'
 alias caskx='brew cask uninstall'
 
 function hb_deprecated {
-  local cmd="${argv[3]}"
-  local cmd_args=( ${(@)argv:4} )
+  local cmd="${@[3]}"
+  local cmd_args="${@:4}"
 
   printf "'brew cask %s' has been deprecated, " "${cmd}"
   printf "using 'brew %s' instead\n" "${cmd}"
 
-  cmd_args=( ${(@)argv:4} )
-  command brew "${cmd}" ${(@)cmd_args}
+  command brew "${cmd}" "${=cmd_args}"
 }

modules/node/init.zsh

@@ -11,8 +11,10 @@ if [[ -s "$HOME/.nvm/nvm.sh" ]]; then
   source "$HOME/.nvm/nvm.sh"
 
 # Load package manager installed NVM into the shell session.
-elif (( $+commands[brew] )) && [[ -d "$(brew --prefix nvm 2> /dev/null)" ]]; then
+elif (( $+commands[brew] )) && \
+  [[ -d "${nvm_prefix::="$(brew --prefix 2> /dev/null)"/opt/nvm}" ]]; then
   source "$(brew --prefix nvm)/nvm.sh"
+  unset nvm_prefix
 
 # Load manually installed nodenv into the shell session.
 elif [[ -s "$HOME/.nodenv/bin/nodenv" ]]; then
@@ -28,18 +30,28 @@ elif (( ! $+commands[node] )); then
   return 1
 fi
 
-# Load NPM completion.
-if (( $+commands[npm] )); then
-  cache_file="${TMPDIR:-/tmp}/prezto-node-cache.$UID.zsh"
+# Load NPM and known helper completions.
+typeset -A compl_commands=(
+  npm   'npm completion'
+  grunt 'grunt --completion=zsh'
+  gupl  'gulp --completion=zsh'
+)
 
-  if [[ "$commands[npm]" -nt "$cache_file" \
-        || "${ZDOTDIR:-$HOME}/.zpreztorc" -nt "$cache_file" \
-        || ! -s "$cache_file" ]]; then
-    # npm is slow; cache its output.
-    npm completion >! "$cache_file" 2> /dev/null
-  fi
+for compl_command in "${(k)compl_commands[@]}"; do
+  if (( $+commands[$compl_command] )); then
+    cache_file="${TMPDIR:-/tmp}/prezto-$compl_command-cache.$UID.zsh"
 
-  source "$cache_file"
+    # Completion commands are slow; cache their output if old or missing.
+    if [[ "$commands[$compl_command]" -nt "$cache_file" \
+          || "${ZDOTDIR:-$HOME}/.zpreztorc" -nt "$cache_file" \
+          || ! -s "$cache_file" ]]; then
+      command ${=compl_commands[$compl_command]} >! "$cache_file" 2> /dev/null
+    fi
 
-  unset cache_file
-fi
+    source "$cache_file"
+
+    unset cache_file
+  fi
+done
+
+unset compl_command{s,}

modules/python/init.zsh

@@ -150,7 +150,7 @@ fi
 
 # Load PIP completion.
 if (( $#commands[(i)pip(|[23])] )); then
-  cache_file="${TMPDIR:-/tmp}/prezto-python-cache.$UID.zsh"
+  cache_file="${TMPDIR:-/tmp}/prezto-pip-cache.$UID.zsh"
 
   # Detect and use one available from among 'pip', 'pip2', 'pip3' variants
   pip_command="$commands[(i)pip(|[23])]"
@@ -160,10 +160,11 @@ if (( $#commands[(i)pip(|[23])] )); then
         || ! -s "$cache_file" ]]; then
     # pip is slow; cache its output. And also support 'pip2', 'pip3' variants
     $pip_command completion --zsh \
-      | sed -e "s|compctl -K [-_[:alnum:]]* pip|& pip2 pip3|" >! "$cache_file" 2> /dev/null
+      | sed -e "s/\(compctl -K [-_[:alnum:]]*\) pip.*/\1 pip(|[23](|.[0-9]))/" >! "$cache_file" 2> /dev/null
   fi
 
   source "$cache_file"
+
   unset cache_file pip_command
 fi
 

modules/rsync/init.zsh

@@ -22,7 +22,7 @@ if grep -q 'xattrs' <(rsync --help 2>&1); then
 fi
 
 # macOS and HFS+ Enhancements
-# http://help.bombich.com/kb/overview/credits#opensource
+# https://bombich.com/kb/ccc5/credits
 if [[ "$OSTYPE" == darwin* ]] && grep -q 'file-flags' <(rsync --help 2>&1); then
   _rsync_cmd="${_rsync_cmd} --crtimes --fileflags --protect-decmpfs --force-change"
 fi

modules/syntax-highlighting/README.md

@@ -9,6 +9,9 @@ Additionally, if this module is used in conjunction with the
 *history-substring-search* module, this module must be loaded **before** the
 *history-substring-search* module.
 
+To elaborate: The relative order of loading the modules would be 
+'syntax-highlighting', 'history-substring-search' and 'prompt'.
+
 Contributors
 ------------