[OS X TeX] El Capitan experiences

Richard Koch koch at uoregon.edu
Fri Oct 2 19:19:42 CEST 2015

Michael Sharpe,

You are the first person to mention the TeXShop magnifying glass problem. This
has bothered me since the first El Capitan betas and I reported the bug to Apple
early on, and later provided them with the source for a short 16 line program 
duplicating the problem on El Capitan and working perfectly on Yosemite.
I got no replies to the bug reports.

Leaving out details, magnification works by creating an NSImage with a PDFImageRep.
Then I call 

	[NSImageDrawInRect: destinationRect fromRect: sourceRect operation: theoperation fraction: thefraction]

On Yosemite, the PDF in sourceRect is redrawn in destinationRect at a higher resolution. In
ElCapitan, everything is converted to a bitmap and the bitmap is just magnified. Hence the
unpleasant result.

Dick Koch

PS: Otherwise I like El Capitan and have run into none of the other problems. 

> On Oct 2, 2015, at 10:04 AM, Michael Sharpe <msharpe at ucsd.edu> wrote:
> I've now installed El Capitan on two different machines. There are some problems I've run into that led me to revert to Yosemite.
> 1. Apple's Mail program causes some grief. Mailboxes are in some cases duplicated during conversion to El Capitan---an easily fixed but irritating issue. Much more serious is the disappearance of all (tens of thousands) messages from my main account. In addition, no connection to my incoming POP server or my outgoing SMTP server seems possible via Mail. 
> 2. A number of programs I value are compromised---Default Folder, TotalFinder (a Finder extension) among them.
> 3. TeXShop 3.54 changed behavior after the update to El Capitan. The preview window now renders text too heavily, and, when using the magnifier in the preview window (the one that magnifies a part of the window, not the entire window) the result is now essentially unreadable, with very low-resolution bitmaps being displayed instead of a re-rendering of part of the pdf at higher resolution. (On both machines, System Preferences/General/Use LCD font smoothing ... is not checked.)
> So, be sure to make a bootable backup before trying El Capitan.
> Michael
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