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MEP 29: Markup text #7291

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Merged
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Nov 5, 2016
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MEP 29: Markup text #7291

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995f8cf
Added markup MEP
rougier Oct 17, 2016
0159cb1
Added link to code
rougier Oct 17, 2016
5d9478a
Fix example link
rougier Oct 17, 2016
9cb29a4
Updated MEP number
rougier Oct 17, 2016
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Added suggestions from the MEP PR comments
rougier Nov 2, 2016
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Typo
rougier Nov 2, 2016
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Added suggestions from the MEP PR comments
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@rougier
rougier committed Nov 4, 2016
commit a4ccb375940fdeba188da3bf331fb749448c4445
27 changes: 26 additions & 1 deletion doc/devel/MEP/MEP29.rst
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Expand Up @@ -45,13 +45,38 @@ Implementation

A proof of concept is provided in `markup_example.py <https://github.com/rougier/matplotlib/blob/markup/examples/text_labels_and_annotations/markup.py>`_ but it currently only handles the horizontal direction.

Improvements
------------

* This proof of concept uses regex to parse the text but it may be better
to use the html.parser from the standard library.

* Computation of text fragment positions could benefit from the OffsetFrom
class. See for example item 5 in `Using Complex Coordinates with Annotations <http://matplotlib.org/devdocs/users/annotations.html#using-complex-coordinates-with-annotations>`_

Problems
--------

* One serious problem is how to deal with text having both latex and
html-like tags. For example, consider the follwing::

$<b>Bold$</b>

Recommendation would be to have mutual exclusion.


Backward compatibility
======================

None at the moment since it is only a proof of concept


Alternatives
============

None (to my knowledge)
As proposed by @anntzer, this could be also implemented as improvements to
mathtext. For example::

r"$\text{Hello \textbf{world}}$"
r"$\text{Hello \textcolor{blue}{world}}$"
r"$\text{Hello \textsf{\small world}}$"