On Sat, 19 Oct 2024 12:54:51 +0300 Eli Zaretskii wrote: >> Date: Thu, 17 Oct 2024 18:36:19 +0000 >> From: Thalis Charakas via "Bug reports for GNU Emacs, >> the Swiss army knife of text editors" >> >> Basically, `tex-view` works, opening Evince, on a compiled .pdf only >> after a .dvi is created. >> >> Running 'emacs -Q' I evaluate the following in the scratch buffer, to >> make it so that latex is compiled to pdf: >> ``` >> (setq tex-print-file-extension ".pdf" >> tex-dvi-view-command "evince" >> tex-dvi-print-command "lpr") >> ``` >> the last two lines are following the instructions on the description of >> `tex-print-file-extension`. >> >> I navigate to a simple .tex in an empty directory and press `C-c C-c` >> which is bound by default to `tex-compile`, I press enter, as the >> default is `pdflatex`, and the file compiles, creating a .pdf in the >> directory. After that I press `C-c C-v`, which is bound to `tex-view` >> but Evince does not open, instead I get the message "tex-print: No >> appropriate ‘.dvi’ file could be found. If I press `C-c C-f` >> (`tex-file`) after that, a .dvi file is created, and now `tex-view` >> works, meaning it opens the .pdf with Evince. >> >> The fact that `tex-view` works on the .pdf only when a .dvi is first >> created seems like a bug. > > Thanks. Can you step with Edebug through tex-print in your case and > try to figure out what happens there that causes the error message? > There's some logic there which is supposed to verify that the current > buffer's print file is up-to-date: > > (if (and (not (equal (current-buffer) tex-last-buffer-texed)) > (buffer-file-name) > ;; Check that this buffer's printed file is up to date. > (file-newer-than-file-p > (setq test-name (tex-append (buffer-file-name) > tex-print-file-extension)) > (buffer-file-name))) > (setq print-file-name-dvi test-name)) > > Maybe something goes wrong there in your case? I debugged this and the problem is that tex-print expects the variable tex-print-file to be set, but (as its doc string says) it is set by tex-region, tex-buffer and tex-file, which are all not commands run by tex-compile, which is meant to run external programs (listed by tex-compile-commands). A simple fix is the following patch: