Re: Incorrect letter spacing in header

[Steven Smith]

On 7/18/19 5:37 AM, Thomas Morley wrote:
> Am Do., 18. Juli 2019 um 13:04 Uhr schrieb David Kastrup <address@hidden>:
> > Steven Smith <address@hidden> writes:
> >
> > > I am working on an arrangement for band, and would like the header
> > > information to be the same size on the conductor's score and the
> > > instrumental parts. I put the scores in different \book block so I
> > > could use the #(set-global-staff-size 12.5) for the conductor's score
> > > and #(set-global-staff-size 20) for the parts.
> > >
> > > Then I tried to use    \abs-fontsize #20  for the Title in a
> > > \bookTitleMarkup block. The second book has the correct font size, but
> > > the letter spacing is wrong. If the first book has the smaller staff
> > > size, the second book title spacing is too wide. If the first book has
> > > the larger staff size, the second book title spacing is too narrow.
> > >
> > > What is going on here? MWE code follows, images attached.
> > It doesn't work but bombs out because of "unexpected \book".  The reason
> > (after replacing unbreakable spaces by ordinary ones) is that
> >
> > >          { \fromproperty #'header:title}
> > is missing a space after #'header:title .  Please check your examples
> > before posting them, even after "trivial" changes.

Point taken. Thanks for your patience

> > version "2.19.80"
> > I can reproduce your problem with Ubuntu's standard version 2.18.2
> > (short of the version complaint, of course) but not with my
> > self-compiled version close to master.  Can you check with the most
> > recent development version (2.19.83 I think)?
> >
> > --
> > David Kastrup
> Fixed with
>
> commit 8c96f95499189e630c7936bf4194f61e7d4d3456
> Author: Torsten Hämmerle <address@hidden>
> Date:   Mon Jun 11 14:03:05 2018 +0200
>
>      Issue 5324: \abs-fontsize and set-global-staff-size in books
>
>      Font data buffered in a hashtable will provide an outdated LilyPond
>      scale factor after changing global staff size between books.
>      The straight-forward solution is to simply apply #ly:restet-all-fonts
>      from within #set-global-staff-size.
>
>      2nd patch:
>
>      One-word sentence in regtest file corrected.
>
> As far as I can tell the patch is not in stable/2.20 and not in 2.19.83
> Worth cherry-picking I'd say.
>
>
> For now one could replace 'set-global-staff-size' with the fixed
> version, full example:

> \version "2.19.82"
>
> #(define-public (set-global-staff-size sz)
>    "Set the default staff size, where SZ is thought to be in PT."
>    (let* ((current-mod (current-module))
>           (pap (ly:parser-lookup '$defaultpaper))
>           (in-layout? (or (module-defined? current-mod 'is-paper)
>                           (module-defined? current-mod 'is-layout)))
>
>           ;; maybe not necessary.
>           ;; but let's be paranoid. Maybe someone still refers to the
>           ;; old one.
>           (new-paper (ly:output-def-clone pap))
>
>           (new-scope (ly:output-def-scope new-paper)))
>
>      (if in-layout?
>          (ly:warning (_ "set-global-staff-size: not in toplevel scope")))
>
>      (ly:reset-all-fonts)
>      (layout-set-absolute-staff-size-in-module new-scope
>                                                (* sz (eval 'pt new-scope)))
>      (module-define! current-mod '$defaultpaper new-paper)))
>
> Cheers,
>    Harm

Thanks so much. I dropped the replacement into my file, and things are 
good again.

-Steve