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Re: Let ', ' separate symbol lists like '.' does (issue 290490043 by add

From: thomasmorley65
Subject: Re: Let ', ' separate symbol lists like '.' does (issue 290490043 by address@hidden)
Date: Tue, 08 Mar 2016 23:28:37 +0000

On 2016/03/08 22:55:51, dak wrote:
On 2016/03/08 22:42:55, wrote:
> On Mar 8, 2016, at 13:17 , mailto:address@hidden wrote:
> >
> > Description:
> > Let ',' separate symbol lists like '.' does
> >
> > While the dotted list syntax is natural for hierarchical paths
like for
> > \override and \revert, it is less natural in cases that may now be
> > written as
> >
> >    \keepWithTag violin,flute,oboe { c''’ }
> >
> Based on my hasty scan of this change, it looks like you’ve made
comma and dot
> interchangeable.


> So it would be valid to write
>    \keepWithTag violin.flute,oboe …
> If that’s the case, it’s weird.

Then don't write it.

I firstly had some concerns about problems arising from people being
tempted to write additional spaces after the comma, though with:

blub = #(define-void-function (arg)(list?) (write (map symbol->string
\blub foo . bar . buzz

I noticed no problem. Hence I expect no problems with commas as well.


My actual secret motivation arose in connection with subproperties
that can be
numerical.  So numbers (at least positive integers) can become members
of lists,
and entering something like 4.5 is a no-go.  4,5 is fine, in
comparison.  That
allows for

     \time 3,2 5/4

which seems nice but also the only function right now taking a
argument.  So that's not much of a justification.

A quick scan through my private functions using number-list? offered
some hits, where it could be a nice input-possibility.

Although I can't review parse-code, I vote for it.
Really nice, especially for number-lists.

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