This re-covers the http://nodejs.org/api/addons.html case for which the "build" directory was added in 00686415, but doesn't break cross-environment projects that use the build directory for including concatenated/minified source. Mazel tov!

Now linking to the official npm FAQ entry (with tl;dr) rather than straight to mikeal's blog post

The "build" directory is lost in this refactor, as many JS projects
do wish to include a minified/concatenated version of their source
in the "build" folder in source control.

Rails: Ignore config/secrets.yml

Remove duplicate rule

Update Delphi to include new extensions

Added file for Common Lisp.

Added ipa file to Objective-C.gitignore

Update Java to exclude J2ME Mobile Tools for Java

Use absolute paths to the files to ignore

This fixes an issue where index.php within a theme directory would be ignored, when the intention was to just ignore the index.php file in the root.

C: Ignore Some Common File Extensions for Binaries on Linux

Remove duplicate line in Objective-C.gitignore

plugin.xml shouldn't be in source control.  This is a Grails plugin artifact

Ignore MonoDevelop cache files

Added .gitignore for Scrivener

Ignore worksheet directory

More updates

Ignore elpa and eshell generated files

Ignore file for elisp projects

More upstream merges

Ignore files created by maven-release-plugin

Add Lazarus IDE ignore file (in global dir this time)

Ignore rope files.

add 'build' to Node.gitignore

Adding 4 directories generated by GWT compiler.

Change Eclipse.gitignore to correctly handle bin/ and tmp/ directories

Upstream merges

Gradle build system ignore

Move editor specific files into a new DartEditor.gitignore