Setting Sublime Text as Git Editor

$ git config --global core.editor "subl -n -w"

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The -n tells Sublime to open a new window and -w says to wait for the files to be closed before returning. (Run $ subl --help to find out what these and other flags mean.)

If that doesn’t work, try:

$ git config --global core.editor "/Applications/Sublime Text.app/Contents/MacOS/Sublime Text"

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You can always confirm which editor you have set for git by running

$ git config --global -e