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List:       lilypond-bug
Subject:    Re: Advanced backend options documentation discrepancy?
From:       Jean Abou Samra <jean () abou-samra ! fr>
Date:       2022-05-23 13:55:45
Message-ID: 2a88d25d-e1c6-6143-2796-63f7ac5f2764 () abou-samra ! fr
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Le 23/05/2022 à 00:39, David Kastrup a écrit  :
> I see
>
> ‘aux-files' BOOL
>       If BOOL is ‘#t', create ‘.tex', ‘.texi', and ‘.count' files when
>       used with the ‘eps' backend option.  Default: ‘#t'.
>
> ‘backend' SYMBOL
>       Use SYMBOL as the backend for LilyPond output.  Possible values
>       are:
>
>       ‘ps'
>            This is the default setting.  PostScript files include TTF,
>            Type1, and OTF fonts.  No ‘subsetting' of these fonts is done.
>            Be aware that using ‘oriental' character sets like Japanese
>            can lead to very large file sizes.
>
>            For PDF output, the ‘ps' backend is used, too; the resulting
>            PS data is post-processed by Ghostscript's ‘ps2pdf' script,
>            which also does font subsetting by default.
>
>       ‘svg'
>            Scalable Vector Graphics.  A single SVG file is created for
>            every page of output.  Music glyphs are encoded as vector
>            graphics, but text fonts are _not_ embedded in the SVG files.
>            Any SVG viewer will therefore need the relevant text fonts to
>            be available to it for proper rendering of both text and
>            lyrics.  It is recommended to not use font ‘lists' or
>            ‘aliases' in case an SVG viewer is unable to handle them.
>            When using _Web Open Font Format_ (WOFF) files the additional
>            ‘-dsvg-woff' switch is required.
>
> in the advanced options description.
>
> In contrast, lilypond -dhelp states
>
>    aux-files (#f)              Create .tex, .texi, .count files for use with
>                                lilypond-book
>    backend ('ps)               Select backend.  Possible values: 'eps, 'null,
>                                'ps, 'scm, 'svg.
>
> So the list of backends seems to be somewhat inconsistent, and the
> default setting of aux-files is documented as #f in the command line
> help and as #t in the lilypond-usage manual.


https://gitlab.com/lilypond/lilypond/-/merge_requests/1376


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