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Guidelines for Code Modification
================================
Coding Style
------------
* Use syntax compatible with Python `2.6+` and `3.1+`.
* Use docstrings with `pydoc` in mind
* Follow the PEP8 style guide: https://www.python.org/dev/peps/pep-0008/
* Always run `make test` before submitting a new PR. `pylint`, `flake8` and
`pytest` needs to be installed.
* When breaking backward compatibility with old configuration files or plugins,
please include a temporary workaround code that provides a compatibility
layer and mark it with a comment that includes the word `COMPAT`. For
examples, grep the code for the word `COMPAT`. :)
Patches
-------
Send patches, created with `git format-patch`, to the email address
hut@hut.pm
or open a pull request on GitHub.
Please use PGP-encryption for security-relevand patches or messages. The UIDs
of my key are `huterich <hut@lavabit.com>` and `hut <hut@hut.pm>`, my
fingerprint is `1E9B 36EC 051F F6F7 FFC9 69A7 F08C E1E2 00FB 5CDF` and my full
pubkey is at the very bottom of this file.
Version Numbering
-----------------
Three numbers, `A.B.C`, where
* `A` changes on a rewrite
* `B` changes when major configuration incompatibilities occur
* `C` changes with each release
Starting Points
---------------
Good places to read about ranger internals are:
* `ranger/core/actions.py`
* `ranger/container/fsobject.py`
About the UI:
* `ranger/gui/widgets/browsercolumn.py`
* `ranger/gui/widgets/browserview.py`
* `ranger/gui/ui.py`
Common Changes
==============
Adding options
--------------
* Add a default value in `rc.conf`, along with a comment that describes the option.
* Add the option to the `ALLOWED_SETTINGS` dictionary in the file
`ranger/container/settings.py` in alphabetical order.
* Add an entry in the man page by editing `doc/ranger.pod`, then rebuild the man
page by running `make man` in the ranger root directory
The setting is now accessible with `self.settings.my_option`, assuming self is a
subclass of `ranger.core.shared.SettingsAware`.
Adding colorschemes
-------------------
* Copy `ranger/colorschemes/default.py` to `ranger/colorschemes/myscheme.py`
and modify it according to your needs. Alternatively, create a subclass of
`ranger.colorschemes.default.Default` and override the `use` method, as it is
done in the `Jungle` colorscheme.
* Add this line to your `~/.config/ranger/rc.conf`:
`set colorscheme myscheme`
Change which programs start which file types
--------------------------------------------
Edit the configuration file `~/.config/ranger/rifle.conf`. The default one can
be obtained by running `ranger --copy-config rifle`.
Change which file extensions have which mime type
-------------------------------------------------
Modify `ranger/data/mime.types`. You may also add your own entries to `~/.mime.types`
Change which files are previewed in the auto preview
----------------------------------------------------
In `ranger/container/file.py`, change the constant `PREVIEW_BLACKLIST`
PGP key
=======
You may wish to send the author (`hut@hut.pm`) PGP-encrypted mails for
security-relevant messages. This is the authors key. Save everything from the
`BEGIN PGP PUBLIC KEY BLOCK` up until the `END PGP PUBLIC KEY BLOCK` message
into a file and import it with `gpg --import <filename>`.
```
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```
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