fix publishing [publish binary]

.travis.yml

@@ -28,10 +28,12 @@ install:
 
 before_script:
 # test publishing
-- PUBLISH=false
-- if [ "[publish]" = `git show -s --format=%B $TRAVIS_COMMIT | tr -d '\n'` ]; then echo yes;PUBLISH=true; fi;
-- if [[ `git describe --contains $( git rev-parse HEAD )` ]]; then echo yes;PUBLISH=true; fi;
-- if [[ $PUBLISH == true ]]; then node-pre-gyp package publish; fi
+- PUBLISH_BINARY=false
+# check if this is a git tag built statically to be portable
+- if [[ $TRAVIS_BRANCH == `git describe --tags --always HEAD` ]]; then echo PUBLISH_BINARY;PUBLISH_BINARY=true; fi;
+# or check if we are manually requesting binary publishing via a commit keyword
+- if test "${COMMIT_MESSAGE#*'[publish binary]'}" != "$COMMIT_MESSAGE"; then echo PUBLISH_BINARY;PUBLISH_BINARY=true; fi;
+- if [[ ${PUBLISH_BINARY} == true ]]; then node-pre-gyp package publish; fi
 # for testing node-webkit, launch a virtual display
 - if [ "$NODE_WEBKIT" != "" ]; then export DISPLAY=:99.0; sh -e /etc/init.d/xvfb start; fi
 # note: `sleep 3` gives xvfb some time to start