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Add font.superfamily support with genre-aware resolution by socram-somel · Pull Request #30155 · matplotlib/matplotlib · GitHub

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Add font.superfamily support with genre-aware resolution - #30155

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Add font.superfamily support with genre-aware resolution#30155
socram-somel wants to merge 1 commit into
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bruswaine:feature_29866

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socram-somel commented Jun 9, 2025

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Closes #29866

Adds support for rcParam 'font.superfamily', allowing users to define logical font groups (superfamilies) that span multiple genres like 'serif', 'sans', and 'mono'.

Each superfamily maps genre + weight + style to real font names using keys like 'bold-italic' or 'normal-normal'.

Font resolution uses genre from font.family and matches against the selected superfamily, trying exact and fallback variants in order of specificity to generality.

Superfamilies can be defined by name (preloaded registry) or passed as inline dicts in rcParams['font.superfamily'].

Legacy behavior is preserved unless superfamily is set. If set, genre-aware matching replaces generic family name.

Includes defaults for DejaVu, Noto, Liberation, and more.

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Add font.superfamily support with genre-aware resolution
74d6684 
Closes matplotlib#29866

This commit adds support for rcParam 'font.superfamily',
allowing users to define logical font groups (superfamilies)
that span multiple genres like 'serif', 'sans', and 'mono'.

Each superfamily maps genre + weight + style to real font
names using keys like 'bold-italic' or 'normal-normal'.

Font resolution uses genre from font.family and matches
against the selected superfamily, trying exact and fallback
variants in order of specificity to generality.

Superfamilies can be defined by name (preloaded registry)
or passed as inline dicts in rcParams['font.superfamily'].

Legacy behavior is preserved unless superfamily is set.
If set, genre-aware matching replaces generic family name.

Includes defaults for DejaVu, Noto, Liberation, and more.

Co-authored-by: Tiago Marques <tiago.l.marques@tecnico.ulisboa.pt>
anntzer requested changes Jun 11, 2025
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Choose a reason Spam Abuse Off Topic Outdated Duplicate Resolved Low Quality

I still don't know if we really want that feature, but if we do, it would definitely not by using a hard-coded table, but more likely by extracting the relevant metadata from the font files.

melissawm moved this to Needs decision in First Time Contributors Jun 20, 2025

socram-somel commented Jun 23, 2025

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I still don't know if we really want that feature, but if we do, it would definitely not by using a hard-coded table, but more likely by extracting the relevant metadata from the font files.

Ok, I'll look into that. About the part of extracting metadata, is it worth to add more dependencies to mpl ?

anntzer commented Jun 23, 2025

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Hopefully it can be done without additional dependencies.

tacaswell commented Jun 23, 2025

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We already have fonttools as a dependency. I would be surprised if there was metadata available to us in fonts that we could not get out with the dependencies we already have.

QuLogic mentioned this pull request Jul 19, 2025
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melissawm moved this from Needs decision to Waiting for author in First Time Contributors Apr 23, 2026
melissawm added the status: needs comment/discussion needs consensus on next step label Aug 20, 2026

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status: needs comment/discussion needs consensus on next step status: needs rebase topic: rcparams

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[ENH]: Allow specifying a typeface instead of a font

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