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## Helm Projectile
Projectile can be integrated with [Helm](https://github.com/emacs-helm/helm) via
`helm-source-projectile-projects`, `helm-source-projectile-files-list`,
`helm-source-projectile-buffers-list` and `helm-source-projectile-recentf-list`
sources (available in `helm-projectile.el`). There is also an example function
for calling Helm with the Projectile file source. You can call it like this:
```
M-x helm-projectile
```
or even better - invoke the key binding <kbd>C-c p h</kbd>.
## Usage
For those who prefer helm to ido, the command `helm-projectile-switch-project`
can be used to replace `projectile-switch-project` to switch project. Please
note that this is different from simply setting `projectile-completion-system`
to `helm`, which just enables projectile to use the Helm completion to complete
a project name. The benefit of using `helm-projectile-switch-project` is that on
any selected project we can fire many actions, not limited to just the "switch
to project" action, as in the case of using helm completion by setting
`projectile-completion-system` to `helm`. Currently, there are five actions:
"Switch to project", "Open Dired in project's directory", "Open project root in
vc-dir or magit", "Switch to Eshell" and "Grep project files". We will add more
and more actions in the future.
`helm-projectile` is capable of opening multiple files by marking the files with
<kbd>C-SPC</kbd> or mark all files with <kbd>M-a</kbd>. Then, press <kbd>RET</kbd>,
all the selected files will be opened.
Note that the helm grep is different from `projectile-grep` because the helm
grep is incremental. To use it, select your projects (select multiple projects
by pressing C-SPC), press "C-s" (or "C-u C-s" for recursive grep), and type your
regexp. As you type the regexp in the mini buffer, the live grep results are
displayed incrementally.
`helm-projectile` also provides Helm versions of common Projectile commands. Currently,
these are the supported commands:
* `helm-projectile-switch-project`
* `helm-projectile-find-file`
* `helm-projectile-find-file-in-known-projects`
* `helm-projectile-find-file-dwim`
* `helm-projectile-find-dir`
* `helm-projectile-recentf`
* `helm-projectile-switch-to-buffer`
* `helm-projectile-grep` (can be used for both grep or ack)
* `helm-projectile-ag`
* Replace Helm equivalent commands in `projectile-commander`
* A virtual directory manager that is unique to Helm Projectile
Why should you use these commands compared with the normal Projectile commands, even
if the normal commands use `helm` as `projectile-completion-system`? The answer is,
Helm specific commands give more useful features. For example, `helm-projectile-switch-project`
allows opening a project in Dired, Magit or Eshell. `helm-projectile-find-file` reuses actions in
`helm-find-files` (which is plenty) and able to open multiple files. Another reason is that in a large
source tree, helm-projectile could be slow because it has to open all available sources.
If you want to use these commands, you have to activate it to replace the normal Projectile
commands:
```lisp
;; (setq helm-projectile-fuzzy-match nil)
(require 'helm-projectile)
(helm-projectile-on)
```
If you already activate helm-projectile key bindings and you don't like it, you can turn it off
and use the normal Projectile bindings with command `helm-projectile-off`. Similarly, if you want to
disable fuzzy matching in Helm Projectile (it is enabled by default), you must set `helm-projectile-fuzzy-match`
to nil before loading `helm-projectile`.
To fully learn Helm Projectile and see what it is capable of, you should refer to this guide:
[Exploring large projects with Projectile and Helm Projectile](http://tuhdo.github.io/helm-projectile.html).
Obviously you need to have Helm installed for this to work :-)
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