Ok my LAST post on this (I can hear your cheers).
I'm only posting this because my previous version has
a glaring bug you would notice come October 1st.
It's not a quoting issue but sed doesn't like
(.{0}) and complains about empty expression (picky).
This only happened after my month/year merge.
Ok added a stopgap to fix the empty expression.
Also discovered my linux co-test host has three
spaces between months instead of bsd's two spaces.
Fine, update my width offset to work on both and
verify many combinations still work as expected.
I just can't think of a dynamic way (in sed) to
accurately determine month boundaries on a line
of numbers.
So for the archives and anyone not using ncal.
cal -y | eval sed -r "\"$(date '+/%Y/,$ s/^/~/;/ %Y/,$ s/~(.{0,$((2%m%%3*22))}())/\1~/;
/%B/,/[^ ]{4}/s/(~.{0,20})(%e)\>/\1`tput so`\2`tput se`/;s/~//')\""
Was a good brain exercise but time to move on
to the next puzzle.
A good reminder why OpenBSD does so much regression
testing after any src change, no matter how small.
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