LaTeX formula extension improvements

Diff against current trunk r13799

Could anyone with LaTeX installed test the extension so that we could update it in 0.92?
Thanks!

I can or can't help ? Or ohter people needed ?

1) Earlier reports which could be checked for possible side-effects of the proposed patch (or maybe for alternate solutions):
Bug #172079 Configure per-document LaTeX preamble for rendering formulas
Bug #212395 Feature request: Latex formula switch to pdflatex from pstoedit
Bug #367446 eqtexsvg: use free software only
Bug #1031658 In Render Latex it isn't possible to specify package paramters
Bug #1210287 LaTeX renderer shows an error message (but does render LaTeX formula)
Bug #1214577 eqtexsvg.py line 72: c.tag should be converted to string first
Bug #1318414 External Call of LaTeX broken for certain path names
Bug #1370693 eqtexsvg should use pdflatex and not die on home directories with spaces
Bug #1403454 Latex Formula crashes with Unrecoverable error: stackunderflow in .setdistillerparams

2) Note also that the original author of the extension now has an updated repository for 'eqtexsvg' at github:
https://github.com/julienvitard/eqtexsvg
http://www.julienvitard.eu/en/projects_en.html

It might be worthwhile to coordinate major changes applied to Inkscape's copy of the extension with Julien Vitard (if he's interested).

On 2014-12-15 17:09 (+0100), Alexander wrote:
> 2. When post-processing LaTeX output pop up dialog with not-needed
> output: supressed by commenting code of it handler.

Won't this also prevent useful error messages from being displayed? It might be better to find a more fine-grained solution to filter out the noisy console messages returned by pstoedit when outlining glyphs (bug #1210287).

Heh... Step by step.

I do not use proprietary soft - only Debian GNU/Linux Sid. As work LaTeX in M$WIN don't known.
In https://github.com/julienvitard/eqtexsvg bad function parse_pkgs stay up. Size of code became more.
Non-good solution have two source for one plugin.

> Won't this also prevent useful error messages from being displayed?

Useful error messages from pstoedit for end user ? :)
Error messages from pstoedit may be interesting only for developers.

172079.
Bugreport contain as minimum 2 ideas.
1: Make possibility for user set self LaTeX preamble. After my rework it became possible. SOLVED.
2: Not lost formula source after eqtexsvg done. O_o... for make it need transparently known as work
eqtexsvg (with all use components), Inkscape and export Inkscape to PDF or EPS.
This idea may be extend to editable formulas. For realisation it as minimum special SVG field needed.

212395.
I don't see rework eqtexsvg from autor of this bug :) May be pdflatex better than latex, but may be not.
Really, pdflatex is not LaTeX - sintax is small different.

Continue ?

367446.
pstoedit currently contained in free part of Debian and signed it mantainers. It question (and all questions about it output) need move to pstoedit developers.

1031658, 1210287 : SOLVED.

1318414, 1370693: M$WIN.

1403454: I just enter "z \in \mathbb{R}^m" and get correct result without errors.

1214577: More info needed. What _LaTeX_ (not SVG) formula occur this error.

Fixed by https://gitlab.com/inkscape/extensions/-/merge_requests/453.

Closed by: https://gitlab.com/jhofinger