Merge remote-tracking branch 'upstream/master'

* upstream/master: (182 commits)
  Avoid setting TMPDIR and make sure all modules handle that properly
  Adjust GitHub templates with commented lines
  [completion] Allow ignores for '/etc/hosts' entries to be dynamic
  [completion] Support ignoring '/etc/hosts' entries in host completion
  [python] Improve and document `virtualenvwrapper` initialization flow
  Update agnoster prompt to include security fix
  Fix typos
  ssh: update README to reflect macOS changes
  Migrate sorin prompt to zsh-async (sorin-ionescu#1385)
  Fix unbound keys in vicmd/viins mode
  [osx] Support custom keyword used by `mand` to open man pages in Dash.app
  [node] Always quote files when `source`-ing
  Update submodules URLs to use git URLs explicitly
  [general] Fix incorrect fenced code indentation
  [utility] Refactor rsync_scp wrapper function and add completion support
  [prompt] Rename helper function `promptpwd` to `prompt-pwd` for consistency
  [general] Switch code block formatting to use fence formatting
  [python] Detect actual `pip` command available for generating completion cache
  [utility] Reuse interactive aliases when 'safe-ops' is set
  [homebrew] Add documentation for brewo and casko
  ...

.editorconfig

@@ -0,0 +1,9 @@
+[*]
+end_of_line = lf
+insert_final_newline = true
+indent_style = space
+indent_size = 2
+trim_trailing_whitespace = true
+
+[{.gitattributes,.gitignore,.gitmodules}]
+indent_style = tab

.github/ISSUE_TEMPLATE.md

@@ -0,0 +1,24 @@
+<!-- Please check if a similar issue already exists or has been closed before before opening your issue. -->
+
+### Description
+<!-- Provide a general description of the bug or feature -->
+
+### Expected behavior
+
+<!-- What you expected to happen -->
+
+### Actual behavior
+
+<!-- What actually happened -->
+
+### Steps to Reproduce
+
+1. [First Step]
+2. [Second Step]
+3. [and so on...]
+
+### Versions
+
+  - Prezto commit:
+  - ZSH version:
+  - OS information:

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,10 @@
+Please be sure to check out our [contributing guidelines](https://github.com/sorin-ionescu/prezto/blob/master/CONTRIBUTING.md)
+before submitting your pull request.
+
+Fixes #
+
+## Proposed Changes
+
+  -
+  -
+  -

.gitmodules

@@ -1,3 +1,6 @@
+[submodule "modules/autosuggestions/external"]
+	path = modules/autosuggestions/external
+	url = https://github.com/zsh-users/zsh-autosuggestions.git
 [submodule "modules/history-substring-search/external"]
 	path = modules/history-substring-search/external
 	url = https://github.com/zsh-users/zsh-history-substring-search.git
@@ -12,7 +15,13 @@
 	url = https://github.com/davidjrice/prezto_powerline.git
 [submodule "modules/prompt/external/agnoster"]
 	path = modules/prompt/external/agnoster
-	url = https://gist.github.com/3712874.git
+	url = https://github.com/agnoster/agnoster-zsh-theme.git
 [submodule "modules/prompt/functions/pure"]
 	path = modules/prompt/external/pure
 	url = https://github.com/sindresorhus/pure.git
+[submodule "modules/fasd/external"]
+	path = modules/fasd/external
+	url = https://github.com/clvv/fasd.git
+[submodule "modules/prompt/external/async"]
+	path = modules/prompt/external/async
+	url = https://github.com/mafredri/zsh-async.git

CONTRIBUTING.md

@@ -23,6 +23,39 @@ improve its performance, do not hesitate to fork and send pull requests.
    - Open a [pull request][4] that relates to but one subject with a clear
      title and description in grammatically correct, complete sentences.
 
+#### Code Style
+
+This project follows the [Google Shell Style Guide][5] when possible. However,
+there are a number of additional things to keep in mind.
+
+   - Local variables should be used whenever possible.
+   - Prefer `zstyle` over environment variables for configuration.
+   - Prefer (( ... )) over [[ ... ]] for arithmetic expression.
+   - Use the function keyword to define functions.
+   - The 80 character hard limit can be waved for readability.
+
+#### Using an Alternative zprezto Directory
+
+To work on zprezto without messing with your current configuration:
+
+```sh
+mkdir devel-zprezto
+cd devel-zprezto
+git clone --recursive https://github.com/sorin-ionescu/prezto.git .zprezto
+ZDOTDIR=$(pwd)
+echo "Your development ZDOTDIR is $ZDOTDIR"
+setopt EXTENDED_GLOB
+for rcfile in "${ZDOTDIR:-$HOME}"/.zprezto/runcoms/^README.md(.N); do
+    ln -s "$rcfile" "${ZDOTDIR:-$HOME}/.${rcfile:t}"
+done
+```
+
+Then to start zsh in this development environment you will run:
+
+```sh
+ZDOTDIR=/path/to/devel-zprezto zsh
+```
+
 #### Modules
 
    - A *README.md* must be present.
@@ -32,10 +65,11 @@ improve its performance, do not hesitate to fork and send pull requests.
 #### Themes
 
    - A screenshots section must be present in the file header.
-   - The pull request description must have [embedded screenshots][5].
+   - The pull request description must have [embedded screenshots][6].
 
 [1]: https://github.com/sorin-ionescu/prezto/contributors
 [2]: http://gun.io/blog/how-to-github-fork-branch-and-pull-request
 [3]: http://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html
 [4]: https://help.github.com/articles/using-pull-requests
-[5]: http://daringfireball.net/projects/markdown/syntax#img
+[5]: https://google.github.io/styleguide/shell.xml
+[6]: http://daringfireball.net/projects/markdown/syntax#img

LICENSE

@@ -0,0 +1,20 @@
+Copyright (c) 2009-2011 Robby Russell and contributors
+Copyright (c) 2011-2017 Sorin Ionescu and contributors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE

README.md

@@ -13,23 +13,37 @@ version is 4.3.17.
 
   1. Launch Zsh:
 
-        zsh
+     ```console
+     zsh
+     ```
 
   2. Clone the repository:
 
-        git clone --recursive https://github.com/sorin-ionescu/prezto.git "${ZDOTDIR:-$HOME}/.zprezto"
+     ```console
+     git clone --recursive https://github.com/sorin-ionescu/prezto.git "${ZDOTDIR:-$HOME}/.zprezto"
+     ```
 
   3. Create a new Zsh configuration by copying the Zsh configuration files
      provided:
 
-        setopt EXTENDED_GLOB
-        for rcfile in "${ZDOTDIR:-$HOME}"/.zprezto/runcoms/^README.md(.N); do
-          ln -s "$rcfile" "${ZDOTDIR:-$HOME}/.${rcfile:t}"
-        done
+     ```sh
+     setopt EXTENDED_GLOB
+     for rcfile in "${ZDOTDIR:-$HOME}"/.zprezto/runcoms/^README.md(.N); do
+       ln -s "$rcfile" "${ZDOTDIR:-$HOME}/.${rcfile:t}"
+     done
+     ```
+
+     Note: If you already have any of the given config files, ln will error. In
+     simple cases you can add `source "${ZDOTDIR:-$HOME}/.zprezto/init.zsh"` to
+     the bottom of your `.zshrc` to load prezto but keep your config intact. For
+     more complicated setups, it is recommended that you back up your original
+     configs and replace them with the provided prezto runcoms.
 
   4. Set Zsh as your default shell:
 
-        chsh -s /bin/zsh
+     ```console
+     chsh -s /bin/zsh
+     ```
 
   5. Open a new Zsh terminal window or tab.
 
@@ -42,9 +56,18 @@ window or tab.
 Updating
 --------
 
-Pull the latest changes and update submodules.
+Run `zprezto-update` to automatically check if there is an update to zprezto.
+If there are no file conflicts, zprezto and its submodules will be
+automatically updated. If there are conflicts you will instructed to go into
+the `$ZPREZTODIR` directory and resolve them yourself.
+
+To pull the latest changes and update submodules manually:
 
-    git pull && git submodule update --init --recursive
+```console
+cd $ZPREZTODIR
+git pull
+git submodule update --init --recursive
+```
 
 Usage
 -----
@@ -83,32 +106,10 @@ The [Zsh Reference Card][7] and the [zsh-lovers][8] man page are indispensable.
 License
 -------
 
-(The MIT License)
-
-Copyright (c) 2009-2011 Robby Russell and contributors.
-
-Copyright (c) 2011-2015 Sorin Ionescu and contributors.
-
-Permission is hereby granted, free of charge, to any person obtaining a copy of
-this software and associated documentation files (the "Software"), to deal in
-the Software without restriction, including without limitation the rights to
-use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
-of the Software, and to permit persons to whom the Software is furnished to do
-so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
+This project is licensed under the MIT License.
 
 [1]: http://www.zsh.org
-[2]: http://i.imgur.com/AzjmpwM.png "sorin theme"
+[2]: http://i.imgur.com/nrGV6pg.png "sorin theme"
 [3]: http://git-scm.com
 [4]: https://github.com
 [5]: http://gitimmersion.com

init.zsh

@@ -12,11 +12,59 @@
 # Check for the minimum supported version.
 min_zsh_version='4.3.17'
 if ! autoload -Uz is-at-least || ! is-at-least "$min_zsh_version"; then
-  print "prezto: old shell detected, minimum required: $min_zsh_version" >&2
+  printf "prezto: old shell detected, minimum required: %s\n" "$min_zsh_version" >&2
   return 1
 fi
 unset min_zsh_version
 
+# zprezto convenience updater
+# The function is surrounded by ( ) instead of { } so it starts in a subshell
+# and won't affect the environment of the calling shell
+function zprezto-update {
+  (
+    function cannot-fast-forward {
+      local STATUS="$1"
+      [[ -n "${STATUS}" ]] && printf "%s\n" "${STATUS}"
+      printf "Unable to fast-forward the changes. You can fix this by "
+      printf "running\ncd '%s' and then\n'git pull' " "${ZPREZTODIR}"
+      printf "to manually pull and possibly merge in changes\n"
+    }
+    cd -q -- "${ZPREZTODIR}" || return 7
+    local orig_branch="$(git symbolic-ref HEAD 2>/dev/null | cut -d '/' -f 3)"
+    if [[ "$orig_branch" == "master" ]]; then
+      git fetch || return "$?"
+      local UPSTREAM=$(git rev-parse '@{u}')
+      local LOCAL=$(git rev-parse @)
+      local REMOTE=$(git rev-parse "$UPSTREAM")
+      local BASE=$(git merge-base @ "$UPSTREAM")
+      if [[ $LOCAL == $REMOTE ]]; then
+        printf "There are no updates.\n"
+        return 0
+      elif [[ $LOCAL == $BASE ]]; then
+        printf "There is an update availible. Trying to pull.\n\n"
+        if git pull --ff-only; then
+          printf "Syncing submodules\n"
+          git submodule update --recursive
+          return $?
+        else
+          cannot-fast-forward
+          return 1
+        fi
+      elif [[ $REMOTE == $BASE ]]; then
+        cannot-fast-forward "Commits in master that aren't in upstream."
+        return 1
+      else
+        cannot-fast-forward "Upstream and local have diverged."
+        return 1
+      fi
+    else
+      printf "zprezto install at '%s' is not on the master branch " "${ZPREZTODIR}"
+      printf "(you're on '%s')\nUnable to automatically update.\n" "${orig_branch}"
+      return 1
+    fi
+    return 1
+  )
+}
 #
 # Module Loader
 #
@@ -25,13 +73,13 @@ unset min_zsh_version
 function pmodload {
   local -a pmodules
   local pmodule
-  local pfunction_glob='^([_.]*|prompt_*_setup|README*)(-.N:t)'
+  local pfunction_glob='^([_.]*|prompt_*_setup|README*|*~)(-.N:t)'
 
   # $argv is overridden in the anonymous function.
   pmodules=("$argv[@]")
 
   # Add functions to $fpath.
-  fpath=(${pmodules:+${ZDOTDIR:-$HOME}/.zprezto/modules/${^pmodules}/functions(/FN)} $fpath)
+  fpath=(${pmodules:+$ZPREZTODIR/modules/${^pmodules}/functions(/FN)} $fpath)
 
   function {
     local pfunction
@@ -40,7 +88,7 @@ function pmodload {
     setopt LOCAL_OPTIONS EXTENDED_GLOB
 
     # Load Prezto functions.
-    for pfunction in ${ZDOTDIR:-$HOME}/.zprezto/modules/${^pmodules}/functions/$~pfunction_glob; do
+    for pfunction in $ZPREZTODIR/modules/${^pmodules}/functions/$~pfunction_glob; do
       autoload -Uz "$pfunction"
     done
   }
@@ -49,19 +97,19 @@ function pmodload {
   for pmodule in "$pmodules[@]"; do
     if zstyle -t ":prezto:module:$pmodule" loaded 'yes' 'no'; then
       continue
-    elif [[ ! -d "${ZDOTDIR:-$HOME}/.zprezto/modules/$pmodule" ]]; then
+    elif [[ ! -d "$ZPREZTODIR/modules/$pmodule" ]]; then
       print "$0: no such module: $pmodule" >&2
       continue
     else
-      if [[ -s "${ZDOTDIR:-$HOME}/.zprezto/modules/$pmodule/init.zsh" ]]; then
-        source "${ZDOTDIR:-$HOME}/.zprezto/modules/$pmodule/init.zsh"
+      if [[ -s "$ZPREZTODIR/modules/$pmodule/init.zsh" ]]; then
+        source "$ZPREZTODIR/modules/$pmodule/init.zsh"
       fi
 
       if (( $? == 0 )); then
         zstyle ":prezto:module:$pmodule" loaded 'yes'
       else
         # Remove the $fpath entry.
-        fpath[(r)${ZDOTDIR:-$HOME}/.zprezto/modules/${pmodule}/functions]=()
+        fpath[(r)${ZPREZTODIR}/modules/${pmodule}/functions]=()
 
         function {
           local pfunction
@@ -71,7 +119,7 @@ function pmodload {
           setopt LOCAL_OPTIONS EXTENDED_GLOB
 
           # Unload Prezto functions.
-          for pfunction in ${ZDOTDIR:-$HOME}/.zprezto/modules/$pmodule/functions/$~pfunction_glob; do
+          for pfunction in $ZPREZTODIR/modules/$pmodule/functions/$~pfunction_glob; do
             unfunction "$pfunction"
           done
         }
@@ -86,6 +134,12 @@ function pmodload {
 # Prezto Initialization
 #
 
+# This finds the directory prezto is installed to so plugin managers don't need
+# to rely on dirty hacks to force prezto into a directory. Additionally, it
+# needs to be done here because inside the pmodload function ${0:h} evaluates to
+# the current directory of the shell rather than the prezto dir.
+ZPREZTODIR=${0:h}
+
 # Source the Prezto configuration file.
 if [[ -s "${ZDOTDIR:-$HOME}/.zpreztorc" ]]; then
   source "${ZDOTDIR:-$HOME}/.zpreztorc"