From: Joey McCollum via ntg-context <ntg-context@ntg.nl>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Cc: Joey McCollum <jmccollum20140511@gmail.com>
Subject: \doifanydefinedelse, \doifallundefinedelse
Date: Fri, 19 Nov 2021 10:26:33 -0500 [thread overview]
Message-ID: <CAGxRUG_d3Tf6jVFnY=056_ifh2ph0m5pJmtS9HBgESs7z==B7A@mail.gmail.com> (raw)
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I was checking the "Branches and Decisions" wiki entry at
https://wiki.contextgarden.net/System_Macros/Branches_and_Decisions, and I
saw that ConTeXt has a useful \doifalldefinedelse macro that checks a
comma-separated list of macro names and proceeds according to whether or
not all of the macros with those names are defined. I was curious as to
whether or not there is also a \doifanydefinedelse (or, equivalently, a
\doifallundefinedelse) macro that would check if *any *of the macros with
names in the comma-separated list is defined (or, equivalently, if all of
them are undefined). I don't see any mention of such a macro on the wiki
page, so I wanted to ask: has something like this already been implemented,
and if not, is there a simple way to do a check like this? This
functionality would be useful for performing some checks on a key-value
assignment, and passing a comma-separated list to a macro would be much
cleaner than doing a bunch of nested if-else blocks.
Joey
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next reply other threads:[~2021-11-19 15:26 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-19 15:26 Joey McCollum via ntg-context [this message]
2021-11-19 22:56 ` Hans Hagen via ntg-context
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