Note on extensions

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Arfon Smith
2014-05-04 09:59:11 -05:00
parent 87bfe3657a
commit 5a1dab8073

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@@ -98,6 +98,29 @@ To run the tests:
The majority of contributions won't need to touch any Ruby code at all. The [master language list](https://github.com/github/linguist/blob/master/lib/linguist/languages.yml) is just a YAML configuration file.
### A note on language extensions
Linguist has a number of methods available to it for identifying the language of a particular file. The initial lookup is based upon the extension of the file, possible file extensions are defined in an array called `extensions`. Take a look at this example for example for `Perl`:
```
Perl:
type: programming
ace_mode: perl
color: "#0298c3"
extensions:
- .pl
- .PL
- .perl
- .ph
- .plx
- .pm
- .pod
- .psgi
interpreters:
- perl
```
Any of the extensions defined are valid but the first in this array should be the most popular.
We try to only add languages once they have some usage on GitHub, so please note in-the-wild usage examples in your pull request.
Almost all bug fixes or new language additions should come with some additional code samples. Just drop them under [`samples/`](https://github.com/github/linguist/tree/master/samples) in the correct subdirectory and our test suite will automatically test them. In most cases you shouldn't need to add any new assertions.