···<date: 2015-12-02, Wednesday>···<from: Thangalin>···

> The answer from a SE question has provided a little light:
> 
> http://tex.stackexchange.com/q/274582/2148
> 
> Directories listed in OSFONTDIR are not recursively scanned for font
> files.

That answer applies to kpse which Context isn’t using for path
scanning. In fact, with the beta 2015.11.19 19:13 I get:

    $ OSFONTDIR=~/.fonts mtxrun --script fonts --reload
    …
    fonts           | names | identifying system font files with suffix 'otf'
    fonts           | names | 'OSFONTDIR' specifies path '/home/phg/.fonts'
    fonts           | names | globbing path '/home/phg/.fonts/**.otf'
    fonts           | names | identifying system font files with suffix 'OTF'
    fonts           | names | globbing path '/home/phg/.fonts/**.OTF'
    fonts           | names | 468 system files identified, 155 skipped, 155 duplicates, 313 hash entries added, runtime 3.186 seconds
    …

The fonts are indexed accordingly:

    $ mtxrun --script fonts --list --file SourceSansPro-Regular.otf
    resolvers       | trees | analyzing 'home:texmf'
sourcesanspro   normal   normal   normal   normal   sourcesansproregular   /home/phg/.fonts/OTF/adobe-source/SourceSansPro-Regular.otf   conflict: regular

And Context will resolve those fonts, initially. However, the
font can’t be found at definition time and later for embedding:

    $ context fnt.tex
    …
    fonts           > otf loading > loading '/home/phg/.fonts/OTF/adobe-source/SourceSansPro-Regular.otf', hash 'sourcesanspro-regular'
    …
    fonts           > otf loading > loading done
    fonts           > otf loading > saving '/home/phg/.fonts/OTF/adobe-source/SourceSansPro-Regular.otf' in cache
    system          > lua > compiling '/home/phg/context/tex/texmf-cache/luatex-cache/context/5fe67e0bfe781ce0dde776fb1556f32e/fonts/otl/sourcesanspro-regular.tma' into '/home/phg/context/tex/texmf-cache/luatex-cache/context/5fe67e0bfe781ce0dde776fb1556f32e/fonts/otl/sourcesanspro-regular.tmc'
    system          > lua > dumping '/home/phg/context/tex/texmf-cache/luatex-cache/context/5fe67e0bfe781ce0dde776fb1556f32e/fonts/otl/sourcesanspro-regular.tma' into '/home/phg/context/tex/texmf-cache/luatex-cache/context/5fe67e0bfe781ce0dde776fb1556f32e/fonts/otl/sourcesanspro-regular.tmc' stripped
    fonts           > otf loading > loading, optimizing, packing and caching time 0.569
    fonts           > defining > source file 'SourceSansPro-Regular.otf' is not found
    …
    close source    > 2 > 3 > /tmp/ctx/fnt.tex
    close source    > 1 > 3 > /home/phg/context/tex/texmf-context/tex/context/base/cont-yes.mkiv

    !LuaTeX error: cannot find OpenType font file for reading ()
     ==> Fatal error occurred, no output PDF file produced!

Log attached. Bug?

Best,
Philipp