Bootstrap 2.3.x: Upgrade to latest uglify-js + update Makefile for uglify v2. Ref. https://github.com/twitter/bootstrap/pull/6965

Makefile

BOOTSTRAP = ./docs/assets/css/bootstrap.css
BOOTSTRAP_LESS = ./less/bootstrap.less
BOOTSTRAP_RESPONSIVE = ./docs/assets/css/bootstrap-responsive.css
BOOTSTRAP_RESPONSIVE_LESS = ./less/responsive.less
DATE=$(shell date +%I:%M%p)
CHECK=\033[32m✔\033[39m
HR=\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#


#
# BUILD DOCS
#

build:
  @echo "\n${HR}"
	@echo "Building Bootstrap..."
	@echo "${HR}\n"
	@./node_modules/.bin/jshint js/*.js --config js/.jshintrc
	@./node_modules/.bin/jshint js/tests/unit/*.js --config js/.jshintrc
	@echo "Running JSHint on javascript...             ${CHECK} Done"
	@./node_modules/.bin/recess --compile ${BOOTSTRAP_LESS} > ${BOOTSTRAP}
	@./node_modules/.bin/recess --compile ${BOOTSTRAP_RESPONSIVE_LESS} > ${BOOTSTRAP_RESPONSIVE}
	@echo "Compiling LESS with Recess...               ${CHECK} Done"
	@node docs/build
	@cp img/* docs/assets/img/
	@cp js/*.js docs/assets/js/
	@cp js/tests/vendor/jquery.js docs/assets/js/
	@echo "Compiling documentation...                  ${CHECK} Done"
	@cat js/bootstrap-transition.js js/bootstrap-alert.js js/bootstrap-button.js js/bootstrap-carousel.js js/bootstrap-collapse.js js/bootstrap-dropdown.js js/bootstrap-modal.js js/bootstrap-tooltip.js js/bootstrap-popover.js js/bootstrap-scrollspy.js js/bootstrap-tab.js js/bootstrap-typeahead.js js/bootstrap-affix.js > docs/assets/js/bootstrap.js
	@./node_modules/.bin/uglifyjs docs/assets/js/bootstrap.js > docs/assets/js/bootstrap.min.tmp.js
	@echo "/**\n* Bootstrap.js v2.3.1 by @fat & @mdo\n* Copyright 2012 Twitter, Inc.\n* http://www.apache.org/licenses/LICENSE-2.0.txt\n*/" > docs/assets/js/copyright.js
	@cat docs/assets/js/copyright.js docs/assets/js/bootstrap.min.tmp.js > docs/assets/js/bootstrap.min.js
	@rm docs/assets/js/copyright.js docs/assets/js/bootstrap.min.tmp.js
	@echo "Compiling and minifying javascript...       ${CHECK} Done"
	@echo "\n${HR}"
	@echo "Bootstrap successfully built at ${DATE}."
	@echo "${HR}\n"
	@echo "Thanks for using Bootstrap,"
	@echo "<3 @mdo and @fat\n"

#
# RUN JSHINT & QUNIT TESTS IN PHANTOMJS
#

test:
	./node_modules/.bin/jshint js/*.js --config js/.jshintrc
	./node_modules/.bin/jshint js/tests/unit/*.js --config js/.jshintrc
	node js/tests/server.js &
	phantomjs js/tests/phantom.js "http://localhost:3000/js/tests"
	kill -9 `cat js/tests/pid.txt`
	rm js/tests/pid.txt

#
# CLEANS THE ROOT DIRECTORY OF PRIOR BUILDS
#

clean:
	rm -r bootstrap

#
# BUILD SIMPLE BOOTSTRAP DIRECTORY
# recess & uglifyjs are required
#

bootstrap: bootstrap-img bootstrap-css bootstrap-js


#
# JS COMPILE
#
bootstrap-js: bootstrap/js/*.js

bootstrap/js/*.js: js/*.js
	mkdir -p bootstrap/js
	cat js/bootstrap-transition.js js/bootstrap-alert.js js/bootstrap-button.js js/bootstrap-carousel.js js/bootstrap-collapse.js js/bootstrap-dropdown.js js/bootstrap-modal.js js/bootstrap-tooltip.js js/bootstrap-popover.js js/bootstrap-scrollspy.js js/bootstrap-tab.js js/bootstrap-typeahead.js js/bootstrap-affix.js > bootstrap/js/bootstrap.js
	./node_modules/.bin/uglifyjs bootstrap/js/bootstrap.js > bootstrap/js/bootstrap.min.tmp.js
	echo "/*!\n* Bootstrap.js by @fat & @mdo\n* Copyright 2012 Twitter, Inc.\n* http://www.apache.org/licenses/LICENSE-2.0.txt\n*/" > bootstrap/js/copyright.js
	cat bootstrap/js/copyright.js bootstrap/js/bootstrap.min.tmp.js > bootstrap/js/bootstrap.min.js
	rm bootstrap/js/copyright.js bootstrap/js/bootstrap.min.tmp.js

#
# CSS COMPLILE
#

bootstrap-css: bootstrap/css/*.css

bootstrap/css/*.css: less/*.less
	mkdir -p bootstrap/css
	./node_modules/.bin/recess --compile ${BOOTSTRAP_LESS} > bootstrap/css/bootstrap.css
	./node_modules/.bin/recess --compress ${BOOTSTRAP_LESS} > bootstrap/css/bootstrap.min.css
	./node_modules/.bin/recess --compile ${BOOTSTRAP_RESPONSIVE_LESS} > bootstrap/css/bootstrap-responsive.css
	./node_modules/.bin/recess --compress ${BOOTSTRAP_RESPONSIVE_LESS} > bootstrap/css/bootstrap-responsive.min.css

#
# IMAGES
#

bootstrap-img: bootstrap/img/*

bootstrap/img/*: img/*
	mkdir -p bootstrap/img
	cp img/* bootstrap/img/


#
# MAKE FOR GH-PAGES 4 FAT & MDO ONLY (O_O  )
#

gh-pages: bootstrap docs
	rm -f docs/assets/bootstrap.zip
	zip -r docs/assets/bootstrap.zip bootstrap
	rm -r bootstrap
	rm -f ../bootstrap-gh-pages/assets/bootstrap.zip
	node docs/build production
	cp -r docs/* ../bootstrap-gh-pages

#
# WATCH LESS FILES
#

watch:
	echo "Watching less files..."; \
	watchr -e "watch('less/.*\.less') { system 'make' }"


.PHONY: docs watch gh-pages bootstrap-img bootstrap-css bootstrap-js

package.json

{
    "name": "bootstrap"
  , "description": "Sleek, intuitive, and powerful front-end framework for faster and easier web development."
  , "version": "2.3.1"
  , "keywords": ["bootstrap", "css"]
  , "homepage": "http://twitter.github.com/bootstrap/"
  , "author": "Twitter Inc."
  , "scripts": { "test": "make test" }
  , "repository": {
      "type": "git"
    , "url": "https://github.com/twitter/bootstrap.git"
  }
  , "licenses": [
    {
        "type": "Apache-2.0"
      , "url": "http://www.apache.org/licenses/LICENSE-2.0"
    }
  ]
  , "devDependencies": {
      "uglify-js": "2.3.2"
    , "jshint": "0.9.1"
    , "recess": "1.1.6"
    , "connect": "2.1.3"
    , "hogan.js": "2.0.0"
  }
}

Uglify-js version 1.x does some weird things to the carousel-indicators; non-minfied works fine, but minified version does not add active-classes to the li. Weird.