Re: Combining \tag with \quoteDuring does not work

[caagr98]

On 03/27/17 19:26, Kaj Persson wrote:
> I thought, that tags always change the source, but obviously I was wrong.

Tags don't actually do anything; they just add a new property to the 
tagged music expression. \{remove,with}WithTag then recurses through the 
music expression and removes everything that has(n't) the correct tag.

If you use variables, then that literally inserts the variable's content 
into the music expression. However, if you use \quoteDuring, that 
inserts a QuoteMusic, which is an instruction to insert a quote with a 
specific name and duration. (This has the advantage of being able to 
reference quotes that aren't defined until later.) Since the QuoteMusic 
doesn't actually contain the referenced music expression, 
\{remove,keep}WithTag can't recurse into it.