[NTG-context] Xml filtering in Lua

[Hans Hagen]

On 11/16/2022 10:09 PM, Thomas A. Schmitz via ntg-context wrote:
> On 11/16/22 21:51, Denis Maier via ntg-context wrote:
>> Just a quick question regarding this?
>> Is xml.filter equivalent to \xmlfilter? If so, how do you pass the 
>> match to a command as you'd do with \xmlfilter?
> 
> I'm still digesting and playing with Massi's reply; will probably be 
> back with more questions :-)
> 
> Anyway:
> 
> If you've filtered something out like this
> 
> local tree = xml.filter (t, "../chapter[@title='mytitle'")

always keep in mind that some expressions return a list of matches, that 
can be looped over and some commands just process the first

anyway, it can sometimes help to add

print(tstring(tree))

so see what you got

Hans

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