pandoc/test/command/4742.md

Check that the commonmark reader handles the ascii_identifiers extension properly.

% pandoc -f commonmark+gfm_auto_identifiers+ascii_identifiers -t native
# non ascii ⚠️ räksmörgås
^D
[ Header
    1
    ( "non-ascii--raksmorgas" , [] , [] )
    [ Str "non ascii \9888\65039 r\228ksm\246rg\229s" ]
]

Note that the emoji here is actually a composite character, formed from \9888 and \65039. The latter is a combining mark, so it survives...

% pandoc -f commonmark+gfm_auto_identifiers-ascii_identifiers -t native
# non ascii ⚠️ räksmörgås
^D
[ Header
    1
    ( "non-ascii-\65039-r\228ksm\246rg\229s" , [] , [] )
    [ Str "non ascii \9888\65039 r\228ksm\246rg\229s" ]
]

gfm should have ascii_identifiers disabled by default.

% pandoc -f gfm -t native
# non ascii ⚠️ räksmörgås
^D
[ Header
    1
    ( "non-ascii-\65039-r\228ksm\246rg\229s" , [] , [] )
    [ Str "non ascii \9888\65039 r\228ksm\246rg\229s" ]
]