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Support OPTIONAL ARGUMENT in user defined macro by \newcommand #2228

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zq1997 opened this issue Mar 29, 2020 · 5 comments
Open

Support OPTIONAL ARGUMENT in user defined macro by \newcommand #2228

zq1997 opened this issue Mar 29, 2020 · 5 comments
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@zq1997
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zq1997 commented Mar 29, 2020

Is your feature request related to a problem? Please describe.
It seems that optional arguments are not supportes by user defined \newcommand.
Just see the following code.

\newcommand \foo [2] [bar] {{#1}^{#2}}
\foo {1}
\foo [baz]{2}

image

Describe the solution you'd like:
Would this optional argumant feature be implemented just like \sqrtmacro? this is a predefined macro in KaTeX with optional argument support.

Link to or name of a (La)TeX package that provides the same feature:
N/A

Describe alternatives you've considered:
N/A

Additional context:
N/A
@edemaine
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edemaine commented Jul 9, 2020

Indeed, this shouldn't be too hard to implement, because KaTeX already internally supports optional arguments (without default values). A small extension to \newcommand ought to do it. A pull request would be welcome; otherwise, I can try to get to it eventually...

@zq1997
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zq1997 commented Jul 9, 2020

I am not very familiar with this project, hope for the pull request in the future.

@pdmosses pdmosses mentioned this issue Mar 1, 2021
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@dualer dualer mentioned this issue Jul 3, 2021
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Lemmingh referenced this issue in keineahnung2345/mit-18.06-linalg-notes Jul 10, 2021
@keineahnung2345
not use \newcommand syntax

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\newcommand is not supported by KaTeX/KaTeX#250
@jakab922 jakab922 mentioned this issue Nov 6, 2021
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@klimanek
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klimanek commented May 4, 2023

Any update on this? Does KaTeX support optional argument now?

@edemaine
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edemaine commented May 4, 2023

Alas, no. When there are updates, they will appear here.

@varkor varkor mentioned this issue Aug 5, 2024
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@aleeper aleeper mentioned this issue Jan 26, 2025
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@aleeper
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aleeper commented Jan 26, 2025 •
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Upvote and bump, for what it's worth 😅

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@kevinbarabash @aleeper @edemaine @klimanek @zq1997