On 8/15/2025 9:19 PM, Henning Hraban Ramm wrote:
Am 15.08.25 um 19:27 schrieb Wolfgang Schuster:
Am 15.08.2025 um 18:57 schrieb Hans Hagen via ntg-context:
On 8/15/2025 6:37 PM, Henning Hraban Ramm wrote:
Hi,
how can I check (in Lua or ConTeXt) if a symbol or color is defined?
\doifdefined is just for macros, isn’t it?
And how can I check if the current font has a glyph?
i suppose you grepped a bit
\doifelsesymboldefined
\doifelsecolor
\doifelsefontchar
and friends ....
also listed in setup-en.pdf
Oops, thanks!
I don’t know why I hate grep… Source browser and wiki just aren’t enough…
Actually when I say grep I mean:
> mtxrun --script grep doifelse*color *.mk*x
or somepath/*.mk*x or somepath/**.mk*x or ...
which is (1) a bit tex/xml aware and (2) uses lua patterns
rather old stuff btw so maybe i should improve it)
(I never use(d) grep .. just use the name as i've seen it being used so
nothing compatible to consider.)
(There are a few more such tools in the suite.)
Hans
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