Title: #716: Fix minor typos
For some commits the titles were the same, but the contents were different.
That was due to my working habit.
The messy `git log` output was due to my attempts to fix the problems.
`git rebase -i HEAD~27` worked wonders to beautify the commits. I can squash
the two remaining commits, if required.
`git push <opt_reponame> newbranch:fix-minor-typos` worked fine too.
See the full comment at
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