Re: how to get half-bar used in Bach Music?

[Marc Mouries]

just want to let you know there was a typo in the snippet that i just caught.
The function works great and the thinner half bar looks more like the one 
Bach's wrote.

What about adding this snippet in the doc about bar lines?

Would it be possible to do the BarLine override every other bar automatically?


On Dec 4, 2010, at 9:49 PM, Marc Mouries wrote:

> 
> thanks all for your help. Browsing the lilypond doc I have stumbled upon the 
> section on the Gregorian notation and what do i find? a half-bar!
> http://lilypond.org/doc/v2.12/Documentation/user/lilypond/Typesetting-Gregorian-chant.html#Divisiones
> 
> I tried to use it but apparently it is a breath mark and as such the bar line 
> are also printed.
> I found an old post asking the question "how to override the bar line" with a 
> snippet that is supposed to work but i get errors on 2.13.38
> http://osdir.com/ml/lilypond-user-gnu/2009-06/msg00299.html 
> 
> \version "2.12.2"
> divisioMaior = {
> \once \override Score.BarLine #'stencil = #ly:breathing- sign::divisio-maior 
> }
> \relative c' {
> c2 d \divisioMaior
> e f \divisioMaior
> g4 a b2 \divisioMaior
> c1 \divisioMaior
> }
> 
> 
> 
> 
> 
> On Nov 22, 2010, at 10:30 AM, jakob lund wrote:
> 
>> Ok here's another ugly hack:
>> 
>> <example>
>> 
>> #(define __x 1)
>> 
>> {
>> \override Staff . BarLine #'bar-size = #(lambda (G) (set! __x (1+
>> __x)) (+ 2 (* 2 (modulo __x 2))))
>> 
>> \relative c'' { c1 c c c c }
>> }
>> 
>> </example>
>> 
>> It's ugly because it uses a `global' variable __x to count the bars
>> and set the bar size to 2 only after an odd number of bars. It screws
>> up if you try to use it with more staffs.
>> 
>> If someone who knows the inner workings of scheme in Lilypond reads
>> this, I would like to know
>> how to properly access the current bar number in the callback!???
>> 
>> 
>> Jakob.
>> 
>> 
>> 2010/11/22 Alexander Kobel <address@hidden>:
>>> [ with cc to lilypond-user; please keep the discussions on the mailing list,
>>> others might have the same problems and can find the solutions in the
>>> mailing list archives ]
>>> 
>>> On 2010-11-22 12:38, Martin Kemp wrote:
>>>> 
>>>> I've just been struggling with this too. All else having failed, I faked
>>>> it by using an invisible bar line and adding:
>>>> 
>>>> \once \override TextScript #'extra-offset = #'(-1 . 3.5) c8_\markup {
>>>> \musicglyph #"rests.M2mensural" }
>>> 
>>> Woah, that's some ugly hack...
>>> Again, I don't see the need for this - I just tested the following, and it
>>> works just perfect for me (use \halfBar to make a "real" bar line at the end
>>> of a measure appear smaller, and \halfAddBar to insert a "fake" barline of
>>> half the usual extent).  If it doesn't in your setting, could you give a
>>> small compiling example to show the problem?
>>> 
>>> halfBar = \once \override Staff . BarLine #'bar-size = #2
>>> halfAddBar = { \halfBar \bar "|" }
>>> 
>>> \relative c' {
>>> c4 c \halfAddBar c c \halfBar |
>>> c c c c |
>>> }
>>> 
>>> 
>>> Cheers,
>>> Alexander
>>> 
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>> 
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