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bug#47807: TeX-view-program settings for Xreader

From: Gustavo Barros
Subject: bug#47807: TeX-view-program settings for Xreader
Date: Thu, 15 Apr 2021 15:35:59 -0300
User-agent: mu4e 1.4.15; emacs 27.2

Hi All,

This is a simple one. `tex.el' includes settings for the "Xreader" to be used in Linux systems as defined in `TeX-view-program-list-builtin'. After loading, the entry for "Xreader" in that variable will be: `("Xreader" TeX-reader-sync-view "xreader")'. However, the function `TeX-reader-sync-view' is actually not defined, but rather `TeX-xreader-sync-view' is (with an "x"). Therefore, using "Xreader" for `output-pdf' in `TeX-view-program-selection' will throw us error "Wrong type argument: listp, TeX-reader-sync-view".

As far as I can tell, the problem does not lie in the definition of `TeX-view-program-list-builtin', because `TeX-view-program-select-evince' relies on `TeX-evince-dbus-p' which will query the DBUS path/scheme/method which is indeed "org.x.reader" (at least in my machine, I suppose that's default, but I really don't know). Thus, it seems `TeX-xreader-sync-view' is incorrectly named, and should drop the "x". It's docstring also seems to not have been adjusted as required after it was "inherited" from `TeX-evince-sync-view'.

Best regards,

PS: Please keep me CC'd.

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