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diff --git a/.oh-my-zsh/plugins/mercurial/README.md b/.oh-my-zsh/plugins/mercurial/README.md
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+# Mercurial plugin
+### Usage
+Update .zshrc:
+
+1. Add name to the list of plugins, e.g. `plugins=(... mercurial ...)`
+   (that is pretty obvious).
+2. Switch to a theme which uses `hg_prompt_info`.
+
+   Or, customize the `$PROMPT` variable of your current theme to contain current folder mercurial repo info. This can be done by putting a custom version of the theme in `$ZSH_CUSTOM` or by changing `$PROMPT` in `.zshrc` after loading the theme.
+
+   The `robbyrussell` theme is used by default, so you need to modify `$PROMPT` var by adding `$(hg_prompt_info)` after `$(git_prompt_info)`, so it looks like this:
+
+   ```zsh
+   PROMPT='${ret_status}%{$fg_bold[green]%}%p %{$fg[cyan]%}%c %{$fg_bold[blue]%}$(git_prompt_info)$(hg_prompt_info)%{$fg_bold[blue]%} % %{$reset_color%}'
+   ```
+
+3. Initialize additional vars used in plugin. So in short put next in **.zshrc**:
+
+   ```
+   ZSH_THEME_HG_PROMPT_PREFIX="%{$fg_bold[magenta]%}hg:(%{$fg[red]%}"
+   ZSH_THEME_HG_PROMPT_SUFFIX="%{$reset_color%}"
+   ZSH_THEME_HG_PROMPT_DIRTY="%{$fg[magenta]%}) %{$fg[yellow]%}✗%{$reset_color%}"
+   ZSH_THEME_HG_PROMPT_CLEAN="%{$fg[magenta]%})"
+   ```
+
+### What's inside?
+#### Adds handy aliases:
+###### general
+* `hgc` - `hg commit`
+* `hgb` - `hg branch`
+* `hgba` - `hg branches`
+* `hgbk` - `hg bookmarks`
+* `hgco` - `hg checkout`
+* `hgd`  - `hg diff`
+* `hged` - `hg diffmerge`
+
+###### pull and update
+* `hgi` - `hg incoming`
+* `hgl` - `hg pull -u`
+* `hglr` - `hg pull --rebase`
+* `hgo` - `hg outgoing`
+* `hgp` - `hg push`
+* `hgs` - `hg status`
+* `hgsl` - `hg log --limit 20 --template "{node|short} | {date|isodatesec} | {author|user}: {desc|strip|firstline}\n"`
+
+###### this is the 'git commit --amend' equivalent
+* `hgca` - `hg qimport -r tip ; hg qrefresh -e ; hg qfinish tip`
+
+###### list unresolved files (since hg does not list unmerged files in the status command)
+* `hgun` - `hg resolve --list`
+
+#### Displays repo branch and directory status in prompt
+This is the same as git plugin does.
+
+**Note**: Additional changes to **.zshrc**, or using a theme designed to use `hg_prompt_info`, are required in order for this to work.
+
+### Mantainers
+[ptrv](https://github.com/ptrv) - original creator
+
+[oshybystyi](https://github.com/oshybystyi) - created this README and know how most of code works
diff --git a/.oh-my-zsh/plugins/mercurial/mercurial.plugin.zsh b/.oh-my-zsh/plugins/mercurial/mercurial.plugin.zsh
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+# Mercurial
+alias hga='hg add'
+alias hgc='hg commit'
+alias hgb='hg branch'
+alias hgba='hg branches'
+alias hgbk='hg bookmarks'
+alias hgco='hg checkout'
+alias hgd='hg diff'
+alias hged='hg diffmerge'
+# pull and update
+alias hgi='hg incoming'
+alias hgl='hg pull -u'
+alias hglr='hg pull --rebase'
+alias hgo='hg outgoing'
+alias hgp='hg push'
+alias hgs='hg status'
+alias hgsl='hg log --limit 20 --template "{node|short} | {date|isodatesec} | {author|user}: {desc|strip|firstline}\n" '
+alias hgca='hg commit --amend'
+# list unresolved files (since hg does not list unmerged files in the status command)
+alias hgun='hg resolve --list'
+
+function in_hg() {
+  if [[ -d .hg ]] || $(hg summary > /dev/null 2>&1); then
+    echo 1
+  fi
+}
+
+function hg_get_branch_name() {
+  if [ $(in_hg) ]; then
+    echo $(hg branch)
+  fi
+}
+
+function hg_prompt_info {
+  if [ $(in_hg) ]; then
+    _DISPLAY=$(hg_get_branch_name)
+    echo "$ZSH_PROMPT_BASE_COLOR$ZSH_THEME_HG_PROMPT_PREFIX\
+$ZSH_THEME_REPO_NAME_COLOR$_DISPLAY$ZSH_PROMPT_BASE_COLOR$ZSH_PROMPT_BASE_COLOR$(hg_dirty)$ZSH_THEME_HG_PROMPT_SUFFIX$ZSH_PROMPT_BASE_COLOR"
+    unset _DISPLAY
+  fi
+}
+
+function hg_dirty_choose {
+  if [ $(in_hg) ]; then
+    hg status 2> /dev/null | command grep -Eq '^\s*[ACDIM!?L]'
+    if [ $pipestatus[-1] -eq 0 ]; then
+      # Grep exits with 0 when "One or more lines were selected", return "dirty".
+      echo $1
+    else
+      # Otherwise, no lines were found, or an error occurred. Return clean.
+      echo $2
+    fi
+  fi
+}
+
+function hg_dirty {
+  hg_dirty_choose $ZSH_THEME_HG_PROMPT_DIRTY $ZSH_THEME_HG_PROMPT_CLEAN
+}
+
+function hgic() {
+    hg incoming "$@" | grep "changeset" | wc -l
+}
+
+function hgoc() {
+    hg outgoing "$@" | grep "changeset" | wc -l
+}