[PATCH] lyxpreview_tools.py: fix a regular expression

[Scott Kostyshak]

On Sat, Feb 15, 2020 at 10:26:15PM -0500, Richard Kimberly Heck wrote:
> On 2/15/20 10:07 PM, Scott Kostyshak wrote:
> >
> >> I'm curious, why is it necessary to support Python 2?
> > I forget what the discussion is regarding why we chose those versions.
> > From what I understand, requiring 2.7 (as opposed to some earlier 2.x)
> > makes things easier. Probably we will not allow 2.7 after some time or
> > whenever it would be a pain to maintain 2.7 compatibility for a
> > particular issue.
> 
> It's only quite recently that we've managed to make all of our scripts
> compatible with Python 3. Like, in the 2.3.x series? The reason why we
> did not just switch to Python 3 had originally to do with two things, I
> think. First, the Windows installer has used Python 2 for a while, and
> we are reluctant to change that lest we break things. Second, there have
> long been issues about detecting the right version of Python, especially
> (again) on Windows.

Thanks for the explanation. That makes sense.

Scott
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