Re: Text centralized above a TextSpan

[Simon Albrecht]

On 21.09.2015 18:13, David Nalesnik wrote:
> On Mon, Sep 21, 2015 at 8:41 AM, David Kastrup <address@hidden 
> <mailto:address@hidden>> wrote:
>
>     David Nalesnik <address@hidden
>     <mailto:address@hidden>> writes:
>
>     > Here's a preliminary experiment with using \lyricmode as an
>     input device
>     > for text spanner details.  It could easily be incorporated into
>     the larger
>     > function, but I've pared this down to ask a question.
>     >
>     > Is it possible to avoid needing to type \lyricmode when calling
>     \test?
>
>     No.  Music functions don't get to choose the syntactic mode of their
>     arguments.  It would be rather tricky to figure out when to switch
>     back
>     and forth without causing tokens to be lexed in the wrong mode due to
>     lookahead.
>
>
> I was initially worried that the presence of the word "lyric" would be 
> a potential source of confusion for a user--who is not entering 
> lyrics, after all.  But if we're going to use lyricmode, the command 
> is a useful reminder. And, really, the improvement over the arcane 
> entry of my last posted version is huge, so who cares about those 
> extra characters.
>
> I'm attaching a rewrite of the code which allows an easy mix of 
> markups/strings and interprets hyphens as connectors.  Now there's no 
> need for a TextSpanner.connectors property.
>
> Duration info is easily available, as are skips.  I'm unsure at the 
> moment how to use this info, though: whether there is more to be 
> gleaned than simply using durations as a guide to relative spacing, 
> whether using this info to position texts relative to notes is 
> possible--or desirable.
>
> This version also gives equal space between texts, promised earlier 
> but not delivered.  (This justification looks immensely better when 
> long texts are mixed with short.)

Great!

I made an essay on a simpler input interface, which redefines 
\startTextSpan as a music function. That would be much preferable at 
least in my eyes. What do you think?
(I hope there wouldn’t be any merge conflicts here…)
However, I’m having a problem with this syntax: the attached file gives 
lots of

"text-spanner-inner-text-lyric-mode.ly:615:5: error: wrong type for 
argument 3.  Expecting music, found #<Music function #<procedure #f (arg)>>
  c1
    \startTextSpan \lyricmode { ral -- len -- tan -- do }"

upon compiling. And I don’t know what my mistake would be…

Best regards, Simon

text-spanner-inner-text-lyric-mode.ly
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