Problems with LaTeX export for $x\text{foo $x$}$-like construts?

[Alain.Cochard@unistra.fr]

Version used: release_9.6-149-g554935 

With an org file containing only

   #+begin_export latex
   $x \text{foo $y$}$

   \(x \text{foo \(y\)}\)

   $x \text{foo \(y\)}$

   \(x \text{foo $y$}\)
   #+end_export

the pdf generated upon latex export gives as expected, i.e., with 'x'
and 'y' in mathematical font.

Maybe this is fully normal, but I find it annoying: when the 4 lines
above are not within a latex block, only the last 2 (that is, with
mixed "$...$" and "\(...\)" constructs), are shown correctly on the
resulting pdf.

The 1st one shows, on the pdf

   $x foo y$
   
(with 'y' in mathematical font).

The 2nd one (if alone in the org file) gives

   File "/home/cochard/Org/debug.pdf" wasn’t produced.  See "*Org PDF
   LaTeX Output*" for details


PS/incidentally: if one adds a blank line and another line to that 2nd
one, i.e., if the org file contains something like

   \(x \text{foo \(y\)}\)

   foo

then a pdf is generated, which shows

   x
   foo

The *Messages* buffer contains

   PDF file produced with errors.
   Running /usr/bin/xdg-open /home/cochard/Org/debug.pdf...done

but only the last of those lines is seen in the minibuffer.  So this
adds another example to those discussed in thread
https://list.orgmode.org/25477.57044.35186.766042@gargle.gargle.HOWL/
where one (at least I) would like to more permanently see "PDF file
produced with errors."


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