TeXShop 5.20 – TeX front-end.

TeXShop is a TeX previewer for OS X, written in Cocoa. Since PDF is a native file format on OS X, TeXShop uses “pdftex” and “pdflatex”; rather than “tex” and “latex” to typeset; these programs in the standard teTeX distribution of TeX produce PDF output instead of DVI output.

TeXShop uses TeX Live, a standard distribution of Tex programs maintained by the TeX Users Group (TUG) for Mac OS X, Windows, Linux, and various other Unix machines. The distribution includes tex, latex, dvips, tex fonts, cyrillic fonts, and virtually all other programs and supporting files commonly used in the TeX world. The most recent version of this distribution is maintained for the Mac by the MacTeX TeXnical Working Group of the TeX Users Group and available under the “Obtaining” tab.

The latest TeXShop release, version 3, requires System 10.7 (Lion). An earlier version of TeXShop, version 2, is also maintained and requires System 10.4 (Tiger), although System 10.5 (Leopard) is strongly recommended because it fixes several important bugs in Apple’s PDFKit code, extensively used in TeXShop. Users with systems 10.2 or 10.3 should use TeXShop 1.43, and users with systems 10.0 and 10.1 should use TeXShop 1.19. Both of these versions are available on this site.

TeXShop is distributed under the GPL public license, and thus free.

Some people complained that line numbers in the source file are too small to read. A new preference under the “Source” tab allows users to choose between small and large line numbers.
The Typst project by Martin Haug and Laurenz Mädje is a complete rewrite of both the input language and the typesetting abilities of TeX and LaTeX. See typst for details. A TeXShop user, Jeroen Scheerder, recently created an engine file that allows TeXShop to typeset Typst sources. Version 5.20 of TeXShop contains that engine in ~/Library/TeXShop/Engines/Inactive/Typst. This folder also contains simple typst source files, called templates, and instructions explaining how to download and install typst. Thus users can easily experiment with Typst using TeXShop.
Typst source files have extension “.typ”. This file extension was added to the list of extensions that TeXShop is willing to create and open, and to the list of file types that TeXShop can typeset. Moreover, source files with extension “.typ” can be added to ~/Library/TeXShop/Templates and then will appear in the Templates pulldown menu in the source window.
Version 5.18 of TeXShop contains a preference which adds a flag whenever Ghostscript is called telling the program to process transparency operators. This flag is understood by Ghostscript 9.51 and later, so TeXShop has code which checks the version of Ghostscript running, and does not add the flag when the version is earlier than 9.51. But very shortly after the release of TeXShop 5.18, Matthias Schmidt read that code and discovered that it did nothing because it was deactivated by a line of debugging code I forgot to remove. I silently fixed the bug and most people updating to version 5.18 received a version without this bug. Since the bug was minor, I decided not to release a new version just to fix it. It is fixed for everyone in version 5.20.
The TeXShop manual was updated slightly to describe the changes in version 5.20. Uwe Schmock has also improved the manual and some of his changes are in the latest version.
Max Horn runs an important web site which may be unknown to most TeXShop users. The site is TeXShop and contains the source code for most versions of TeXShop since the program began. While the Horn site was under construction, I sent him old sources obtained by turned on computers that had last run twenty years ago; they started right up! That is how I found the original sources for the earliest TeXShop, which are linked from the the main TeXShop page, pages.uoregon.edu.

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