Bug 448028 - sometimes vertical line or rectangle at the beginning of a line - input and/or output
Summary: sometimes vertical line or rectangle at the beginning of a line - input and/o...
Status: RESOLVED UPSTREAM
Alias: None
Product: cantor
Classification: Applications
Component: maxima-backend (show other bugs)
Version: 21.12.1
Platform: Debian stable Linux
: NOR normal
Target Milestone: ---
Assignee: Cantor Bugs
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2022-01-06 16:39 UTC by Helmut B
Modified: 2022-01-20 07:40 UTC (History)
2 users (show)

See Also:
Latest Commit:
Version Fixed In:
Sentry Crash Report:


Attachments
extract from Haager, Computeralgebra mit Maxima (1.70 MB, application/zip)
2022-01-06 16:39 UTC, Helmut B
Details
attachment-14139-0.html (1.67 KB, text/html)
2022-01-08 08:30 UTC, Helmut B
Details
IDP3hv7sGeduzph3.png (103.95 KB, image/png)
2022-01-08 08:30 UTC, Helmut B
Details

Note You need to log in before you can comment on or make changes to this bug.
Description Helmut B 2022-01-06 16:39:36 UTC
Created attachment 145165 [details]
extract from Haager, Computeralgebra mit Maxima

sometimes vertical line or rectangle at the beginning of a line - input and/or output
Comment 1 Alexander Semke 2022-01-07 21:17:46 UTC
(In reply to Helmut B from comment #0)
> Created attachment 145165 [details]
> extract from Haager, Computeralgebra mit Maxima
> 
> sometimes vertical line or rectangle at the beginning of a line - input
> and/or output
I have troubles opening Cantor projects with embedded EPS images for the LaTeX output and I cannot check your project right now. Can you please do a screenshot of the vertical line you mentioned? Thank you.
Comment 2 Helmut B 2022-01-08 08:30:24 UTC
Created attachment 145212 [details]
attachment-14139-0.html

On 07.01.22 22:17, Alexander Semke wrote:
> https://bugs.kde.org/show_bug.cgi?id=448028
>
> Alexander Semke<alexander.semke@web.de>  changed:
>
>             What    |Removed                     |Added
> ----------------------------------------------------------------------------
>                   CC|                            |alexander.semke@web.de
>
> --- Comment #1 from Alexander Semke<alexander.semke@web.de>  ---
> (In reply to Helmut B from comment #0)
>> Created attachment 145165 [details]
>> extract from Haager, Computeralgebra mit Maxima
>>
>> sometimes vertical line or rectangle at the beginning of a line - input
>> and/or output
> I have troubles opening Cantor projects with embedded EPS images for the LaTeX
> output and I cannot check your project right now. Can you please do a
> screenshot of the vertical line you mentioned? Thank you.
>
Comment 3 Helmut B 2022-01-08 08:30:24 UTC
Created attachment 145213 [details]
IDP3hv7sGeduzph3.png
Comment 4 Alexander Semke 2022-01-08 09:37:43 UTC
(In reply to Helmut B from comment #2)
> Created attachment 145212 [details]
> attachment-14139-0.html
Danke, Helmut. This looks like an issue with the libspectre library rendering the EPS output. This library is causing problems in multiple places and we're trying to remove it now completely and use PDF instead. Until this change is finalized in Cantor, you can switch off the LaTeX-typesetting in the application settings. With this you get the output of Maxima in plain text format which also looks very reasonable for very many use-cases.

I also see you're working with "LaTeX entries" to enter text. If these entries are also causing issues for you, you can switch to text and/or markdown entries maybe.
Comment 5 Helmut B 2022-01-09 15:55:55 UTC
Hallo Alexander,

using Ubuntu Mate 20.4 instead of Debian 11.1 the problem is gone.

Helmut


Am 08.01.22 um 10:37 schrieb Alexander Semke:
> https://bugs.kde.org/show_bug.cgi?id=448028
>
> --- Comment #4 from Alexander Semke <alexander.semke@web.de> ---
> (In reply to Helmut B from comment #2)
>> Created attachment 145212 [details]
>> attachment-14139-0.html
> Danke, Helmut. This looks like an issue with the libspectre library rendering
> the EPS output. This library is causing problems in multiple places and we're
> trying to remove it now completely and use PDF instead. Until this change is
> finalized in Cantor, you can switch off the LaTeX-typesetting in the
> application settings. With this you get the output of Maxima in plain text
> format which also looks very reasonable for very many use-cases.
>
> I also see you're working with "LaTeX entries" to enter text. If these entries
> are also causing issues for you, you can switch to text and/or markdown entries
> maybe.
>