notebook -- bug in parsing \ at end of line in %latex mode

[williamstein]

A subtle problem with "%latex" cells is illustrated at
<http://www-maths.swan.ac.uk/staff/fwc/sage-notebook-latex.tiff>

When "\\" occurs at the end of a line it seems to gooble the first
character in the next line.

I'm using Mac OS X 10.4.11, and the same thing happens both Firefox
and Safari.

Francis

Component: notebook

Issue created by migration from https://trac.sagemath.org/ticket/3201

[williamstein]

comment:1

I can confirm that this sort of bug is very likely to happen. I think \ parsing
gets done before the code gets sent to latex.eval or something like that. It's an
interesting bug, and definitely something that needs to get fixed.

[mwhansen]

comment:2

This is caused by the line

        I = I.replace('\\\n','')

in worksheet.py. This should be cleaner to fix after some other changes I have planned. This is here just as a reminder to me.

[mwhansen]

Attachment: trac_3201.patch.gz

[mwhansen]

comment:4

Note that this patch depends on #5050.

[jasongrout]

comment:5

The patch works for me. Where is the doctest?