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mathtext support for \phantom, \llap, \rlap for faking text metrics.#30908

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QuLogic merged 1 commit intomatplotlib:text-overhaulfrom
anntzer:texphantoms
Mar 11, 2026
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mathtext support for \phantom, \llap, \rlap for faking text metrics.#30908
QuLogic merged 1 commit intomatplotlib:text-overhaulfrom
anntzer:texphantoms

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@anntzer anntzer commented Dec 29, 2025 •
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Closes #28211 (although it doesn't implement \smash, which isn't really necessary). Goes on top of #30059 (some details of mathtext raster rendering are different prior to #30059 and I don't think it's really worth figuring out how to exactly write the code compatible with the old version).

The example in the given issue is supported via

from pylab import *
fig = figure(layout="constrained")
sfs = fig.subfigures(2)
ax0 = sfs[0].add_subplot()
ax0.plot([1, 2], label=r"$\rlap{\text{foo}}\phantom{\text{a longer label}}$")
sfs[0].legend(loc="outside right upper")
ax1 = sfs[1].add_subplot()
ax1.plot([1, 2], label="foo")
ax1.plot([2, 1], label="a longer label")
sfs[1].legend(loc="outside right upper")
show()
image

QuLogic
QuLogic reviewed Feb 7, 2026
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doc/release/next_whats_new/tex_phantoms.rst Outdated
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
mathtext gained support for the TeX macros ``\phantom``, ``\llap``, and
``\rlap``. ``\phantom`` allows to occupy some space on the canvas as if some
text was being rendered, without actually render that text, whereas ``\llap``
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Suggested change
text was being rendered, without actually render that text, whereas ``\llap``
text was being rendered, without actually rendering that text, whereas ``\llap``

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@anntzer anntzer Feb 7, 2026

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thanks, edited.

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QuLogic commented Feb 11, 2026

But still has conflicts...

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anntzer commented Feb 11, 2026

rebased.

@QuLogic QuLogic added this to the v3.11.0 milestone Mar 2, 2026
@QuLogic QuLogic merged commit 88de239 into matplotlib:text-overhaul Mar 11, 2026
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@anntzer anntzer deleted the texphantoms branch March 11, 2026 19:12
wavebyrd pushed a commit to wavebyrd/matplotlib that referenced this pull request Mar 13, 2026
@QuLogic
Merge pull request matplotlib#30908 from anntzer/texphantoms
5ec0f59 
mathtext support for \phantom, \llap, \rlap for faking text metrics.
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@QuLogic QuLogic QuLogic approved these changes

@ksunden ksunden ksunden approved these changes

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