> Am 31.10.2021 um 03:12 schrieb Aaron Hill <lilyp...@hillvisions.com>:

> I run SumatraPDF which is able to display a PDF without causing Lilypond to 
> fail to write to the file at a later time.  In fact, it is also able to 
> detect such changes and redisplay its contents.  None of this is special to 
> Sumatra though, so there could be other PDF viewers that are similarly 
> well-behaved.

I recently did a survey on PDF viewers in relation to TeX. Sumatra is 
exceptionally well-behaved and thus a favorite of TeX developers on Windows.

I don’t run Windows myself (and my Linux is 64 bit only, so I can’t run Wine 
either) and would welcome more hints about PDF viewers on Windows.

Most open source PDF viewers are in a sad state of supporting only basic 
features or subsets of features like annotations and forms; most can’t even 
display extended properties (LuaTeX sets a few), and don’t ask for XMP.
That doesn’t mean commercial PDF viewers/editors would be generally better. 
Foxit Reader crashes nearly as often as Adobe Reader when I work with 
annotations (on MacOS). I found only two commercial apps than can change 
TrimBox/BleedBox in a visual way: Acrobat Pro and PDF Studio Pro, and the 
latter reliably crashes on PDFs created with TeX.

Sorry, OT.

As a MIDI player I’m using FluidSynth/QSynth with one the recommended 
soundfonts.

Hraban

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