This is a rewrite of the regex that handles Emacs modeline matching. The
current one is a little flaky, causing some files to be misclassified as
"E", among other things.
It's worth noting malformed modelines can still change a file's language
in Emacs. Provided the -*- delimiters are intact, and the mode's name is
decipherable, Emacs will set the appropriate language mode *and* display
a warning about a malformed modeline:
-*- foo-bar mode: ruby -*- # Malformed, but understandable
-*- mode: ruby--*- # Completely invalid
The new pattern accommodates this leniency, making no effort to validate
a modeline's syntax beyond readable mode-names. In other words, if Emacs
accepts certain errors, we should too.
The current expressions fail to match certain permutations of options:
vim: noexpandtab: ft=javascript:
vim: titlestring=foo\ ft=notperl ft=javascript:
Version-specific modelines are also unaccounted for:
vim600: set foldmethod=marker ft=javascript: # >= Vim 6.0
vim<600: set ft=javascript: # < Vim 6.0
See http://vimdoc.sourceforge.net/htmldoc/options.html#modeline
This file is generated by the `npm shrinkwrap` command. It's large,
generated, and has a noisey diff. One similar file, php composer lock
files, is already ignored.
Closes https://github.com/github/linguist/issues/3045
* Added Django environment folder in exclusion
Django projects have env/ folder in which dependencies of the project like Django, Pillow, and other libraries are installed from the requirements.txt file. It would be best if this folder of dependencies is ignored from the language statistics.
* Corrected Errors
Corrected the misplaced code and put removed the start character as the environment folder may not always be in the root.
* Adding test for env folder
* master: (168 commits)
ruby for example
Bumping version
Updating grammars
Grammar for Less from Atom package
Remove Less grammar
Updating to latest perl6 grammar
Adding Perl6-specific grammar.
Grammar for YANG from Atom package
Support for YANG language
Add detection of GrammarKit-generated files
Add .xproj to list of XML extensions
Test submodules are using HTTPS links
Improved vim modeline detection
Heuristic for Pod vs. Perl
Bumping to v4.7.4
Grammar update
Support .rs.in as a file extension for Rust files.
HTTPS links for submodules
Add the LFE lexer as an example of erlang .xrl
Add the Elixir parser as an example of erlang .yrl
...
GrammarKit is a plugin by JetBrains for creating custom language plugins
for JetBrains IDEs (such as IntelliJ, RubyMine, CLion and more). It
defines a BNF parser language which can be used to generate a parser in
Java, and it also integrates JFLex for generating a lexer in Java.
Both of these generated Java files can be recognised by a comment on the
first line of the file, and so classifying them as generated is trivial.
TLDR: This greatly increases the flexibility of vim modeline detection
to manually set the language of a file.
In vim there are two forms of modelines:
[text]{white}{vi:|vim:|ex:}[white]{options}
examples: 'vim: syntax=perl', 'ex: filetype=ruby'
-and-
[text]{white}{vi:|vim:|Vim:|ex:}[white]se[t] {options}:[text]
examples: 'vim set syntax=perl:', 'Vim: se ft=ruby:'
As you can see, there are many combinations. These changes should allow
most combinations to be used. The two most important additions are the
use of the keyword 'syntax', as well as the addition of the first form
(you now no longer need to use the keyword 'set' with a colon at the end).
The use of first form with 'syntax' is very, very common across GitHub:
https://github.com/search?l=ruby&q=vim%3A+syntax%3D&ref=searchresults&type=Code&utf8=%E2%9C%93
