Dear list,
it seems as if there are braces missing in the definition of \buff_save around
#2.
\def\buff_save[#1][#2]%
{...
{\setupcurrentsavebuffer[\c!list={#1},\c!file=#2]}%
...}
I think they are missing, because it makes the following work, even though
arguments and key-value arguments shouldn't be mixed up.
\startbuffer[hash]
foo
\stopbuffer
\savebuffer[hash][hello.txt,prefix=no]
\starttext
\stoptext
I think you should either make a third argument for a key-value list or just
make the second argument the key-value list. Then users could input
\savebuffer[hash][file=hello.txt,prefix=no].
Cheers, Henri
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