mirror of
https://github.com/oh-my-fish/oh-my-fish.git
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136 lines
3.3 KiB
Markdown
136 lines
3.3 KiB
Markdown
<div align="center">
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<a href="http://github.com/oh-my-fish/oh-my-fish">
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<img width=120px src="https://cloud.githubusercontent.com/assets/8317250/8510172/f006f0a4-230f-11e5-98b6-5c2e3c87088f.png">
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</a>
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</div>
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<br>
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<p align="center">
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<b><a href="#issues">Issues</a></b>
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<b><a href="#package-repositories">Packages</a></b>
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<b><a href="#commit-messages">Commit Messages</a></b>
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<b><a href="#code-style">Code Style</a></b>
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</p>
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# Contributing
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Thanks for taking the time to read this guide and please _do_ contribute to Oh My Fish. This is an open initiative and _everyone_ is welcome. :metal:
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## Issues
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Please [open an issue](https://github.com/oh-my-fish/oh-my-fish/issues) for bug reports / patches. Include your OS version, code examples, stack traces and everything you can to help you debug your problem.
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If you have a new feature or large change in mind, please open a new issue with your suggestion to discuss the idea together.
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## Package Repositories
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This is the repository for the core Oh My Fish framework and bootstrap installer.
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If your issue is related to a specific package, we still may be able to help, but consider visiting that package's issue tracker first.
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## Commit Messages
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+ Use the [present tense](https://simple.wikipedia.org/wiki/Present_tense) ("add awesome-package" not "added ...")
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+ Less than 72 characters or less for the first line of your commit.
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+ Use of [emoji](http://www.emoji-cheat-sheet.com/) is definitely encouraged. :lollipop:
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## Code Style
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> These rules are not set in stone. Feel free to open an issue with suggestions and/or feedback.
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### Control Flow
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Using `if..else..end` blocks is preferred.
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```fish
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if not set -q ENV_VARIABLE
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set -g ENV_VARIABLE 42
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end
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```
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The following syntax is more concise, but arguably less transparent.
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> You still may use `and` / `or` statements if you consider `if..else..then` to be overkill.
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```fish
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set -q VAR; or set -g VAR 42
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```
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### Functions
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Use named arguments `-a`:
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```fish
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function greet -a message
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echo "$message"
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end
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```
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Use `-d` description fields:
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```fish
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function greet -a message -d "Display a greeting message"
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echo "$message"
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end
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```
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In order to avoid name collisions, use a prefix based on the name of your package. For example, if you are writing a `ninja` package use `ninja.function_name`.
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### Private Functions
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`fish` does not have private functions, so in order to avoid polluting the global namespace you have a few options:
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+ Use double underscore before your function name. For example, if you are writing a `ninja` package using `__ninja.function_name`.
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+ Delete the function before returning using `functions -e function_name`
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```fish
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function public_func
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function private_func
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# ...
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functions -e private_func
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end
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end
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```
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+ Use blocks
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### Blocks
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Blocks allow you to write code resembling macro expressions composed of smaller blocks without relying on variables.
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Compare the following _without_ blocks:
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```fish
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set -l colors green1 green2 green3
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if test $error -ne 0
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set colors red1 red2 red3
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end
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for color in $colors
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printf "%s"(set_color $color)">"
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end
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```
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and _using_ blocks:
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```fish
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for color in (begin
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if test $error -ne 0
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and printf "%s\n" red1 red2 red3
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or printf "%s\n" green1 green2 green3
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end)
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printf "%s"(set_color $color)">"
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end
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```
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The second example does not use a `colors` variable.
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