Description

anntzer

opened on Oct 15, 2020

Issue body actions

Bug report

Bug summary

mathtext sometimes selects incorrect glyphs to display angle brackets.

Code for reproduction

from pylab import *

figtext(.2, .7,
        r"$\left<?\right>"
        r"\left\langle?\right\rangle$") \
    .set_math_fontfamily("custom")
figtext(.2, .3,
        r"$\left<\frac{\sum_{0}^{1}}{\sum_{0}^{1}}\right>"
        r"\left\langle\frac{\sum_{0}^{1}}{\sum_{0}^{1}}\right\rangle$") \
    .set_math_fontfamily("cm")
show()

Actual outcome

The glyphs for the small \left<\right> when using "custom" mathtext.fontset and the large \left\langle\right\rangle when using "cm" mathtext.fontset are wrong.

Expected outcome

Correct glyphs.

I have some ideas on how to fix this, but would rather wait for mathtext to go fully private (i.e. 3.6) instead of jumping through hoops and hoops of backcompat layers... (but if anyone else wants to have a go at it before then, please do)

Matplotlib version

• Operating system: fedora
• Matplotlib version: head
• Matplotlib backend (print(matplotlib.get_backend())): agg
• Python version: 38
• Jupyter version (if applicable):
• Other libraries:

Activity

1. anntzer

   added

   topic: text/mathtext

   on Oct 15, 2020
2. github-actions commented on Aug 28, 2023

   

   github-actionsBot

   on Aug 28, 2023

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   This issue has been marked "inactive" because it has been 365 days since the last comment. If this issue is still present in recent Matplotlib releases, or the feature request is still wanted, please leave a comment and this label will be removed. If there are no updates in another 30 days, this issue will be automatically closed, but you are free to re-open or create a new issue if needed. We value issue reports, and this procedure is meant to help us resurface and prioritize issues that have not been addressed yet, not make them disappear. Thanks for your help!
3. github-actions

   added

   status: inactiveMarked by the “Stale” Github ActionMarked by the “Stale” Github Action

   on Aug 28, 2023
4. oscargus

   added

   keepItems to be ignored by the “Stale” Github ActionItems to be ignored by the “Stale” Github Action

   and removed

   status: inactiveMarked by the “Stale” Github ActionMarked by the “Stale” Github Action

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5. oscargus commented on Aug 28, 2023

   

   oscargus

   on Aug 28, 2023

   Member

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   The bug is still there and there is a PR for it, so keep it until fixed.
6. QuLogic

   self-assigned this

   on Apr 17, 2025
7. QuLogic commented on Apr 17, 2025

   

   QuLogic

   on Apr 17, 2025

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   This is a duplicate of #5210.
8. QuLogic

   closed this as a duplicateof Unexpected replacement of \right) with exclamation point in MathTextParser output #5210 on Apr 17, 2025
9. QuLogic

   added

   status: duplicate

   and removed

   keepItems to be ignored by the “Stale” Github ActionItems to be ignored by the “Stale” Github Action

   on Apr 17, 2025

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