Re: misalignment in header -- fill-line issue?

On 2025-06-06 10:02, Mats Bengtsson wrote:
> On 2025-06-06 06:02, Werner LEMBERG wrote:
> 
> 
>     But I still think that there's a problem with \fill-line. I
>     don't think it should cause the word "Composer" to protrude
>     past the end of the staff when there is plenty of room for it
>     to fit properly right-aligned to the end of the staff.
> 
> Yes, this is definitely a flaw in the current implementation of
> \fill-line.
> 
> I don't think so.  IMHO it's rather that the documentation of
> `\fill-line` is not adequate to what this function really does, namely
> to split a line into N equally large regions for N arguments, with the
> text in the leftmost region left-aligned, the text in the rightmost
> region right-aligned, and the remaining text strings centered in the
> respective regions.  In many cases it is plain ugly if the middle part
> is moved to the right because the left part is little bit longer.
> 
>    When copy/pasting my example into the previous email, I missed to
>    include a couple of lines, so the example didn't show the actual 
> bug.
>    Here comes the example I intended to include, which shows the bug
>    namely that the right-most markup on the line is pushed to the right
>    beyond line-width:
>    \version "2.25.25"
>    \paper {
>      line-width = #100
>    }
>    \markup\fill-line{ "|Left" "Middle" "Right|" }
>    \markup\fill-line{ "|Leeeeeeeeeeeeeeeeeeeeeeeeeeeeeeft" "Middle"
>    "Right|" }
>    \markup\fill-line{ "|Leeeeeeeeeeeeeeeeeeeeeeeeeeeeeeft" \null 
> "Right|"
>    }
>    \markup \vspace #1
>    \markup\italic "Expected:"
>    \markup\fill-line{ "|Left" "Middle" "Right|" }
>    \markup\fill-line{ \with-dimension #X #'(0 . 0 )
>    "|Leeeeeeeeeeeeeeeeeeeeeeeeeeeeeeft" "Middle" "Right|" }
>    \markup\fill-line{ \with-dimension #X #'(0 . 0 )
>    "|Leeeeeeeeeeeeeeeeeeeeeeeeeeeeeeft" \null "Right|" }
> 
>       /Mats

I have submitted a new issue using the example above:
https://gitlab.com/lilypond/lilypond/-/issues/6823

James