[Octave-bug-tracker] [bug #55437] Files in editor are reported as modified while heavily parsing date strings with datenum()

[Andrew Janke]

Follow-up Comment #5, bug #55437 (project octave):

Here's a patch to try out the "munge with explicit time zone" approach: file
#46052:  datevec-munge-strings-instead-of-TZ-env-var.patch. Lars, want to try
this out?

Negligible effect on parsing speed. Before:


>> bench_datenum
Parsed 5000 dates in 0.972425938 s, 194 usec per date
>> bench_datenum (50000)
Parsed 50000 dates in 9.472014904 s, 189 usec per date


After:


>> bench_datenum
Parsed 5000 dates in 0.983253002 s, 197 usec per date
>> bench_datenum (50000)
Parsed 50000 dates in 9.850703001 s, 197 usec per date


There was one test it broke when I tried it out. But that was for `eigs`,
which doesn't even use dates as far as I can tell. I suspect that was just  an
existing intermittent failure cropping up.

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