I was entering a commit message in GitHub, when I was shown the following tip:

ProTip! Great commit summaries contain fewer than 50 characters. Place extra information in the extended description.

Maybe it’s just me but it would be nice if the message provided a link to a style guide explaining why great commit summaries have fewer than 50 characters. There must be a reason, since someone has gone to the trouble of coding up this message. Tell me what that reason is, and I’ll determine whether it’s a good enough style to adopt.

If there isn’t a reason, maybe it’s best not to bother me about this.