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Thanks Wolfgang. I had tried \# which I normally use to escape a hash but it didn't work. I was unaware of \letterhash.
On 19 Dec 2021, at 17:37, Wolfgang Schuster
wrote: Bruce Horrocks via ntg-context schrieb am 19.12.2021 um 18:12:
Hi,
The following MWE won't compile for me:
\setupinteraction [state=start] \starttext Click me: \goto{https://forum.swissmicros.com/viewtopic.php?f=2&p=22236#p22236} [url(https://forum.swissmicros.com/viewtopic.php?f=2&p=22236#p22236)] \stoptext
under "mtx-context | current version: 2021.12.10 11:41"
\useURL fails as well so I assume it's in the URL parser.
The hash (#) is a special character in TeX and you have to either replace it with something safe like \letterhash or in case of \useurl you can put all settings in a asciimode block, e.g.
\startasciimode \useurl [...] \stopasciimode
Wolfgang
— Bruce Horrocks Hampshire, UK