c To repro, on KMW, press <;a> which works. then press <;e> which doesn't
store(&VERSION) '10.0'
store(&NAME) 'Secondary group any mismatch #920'
store(&TARGETS) 'any'

begin Unicode > use(main)

group(main) using keys

+ [K_E] > U+0065
+ [K_COLON] > dk(semicolon)
+ '.' > U+1D1F

+ 'f' > 'f'
+ 'g' > 'g'

store(a-key) 'a'
store(a-out) U+1D44 
dk(semicolon) + any(a-key) > index(a-out, 2)

match > use(deadkeys)   

group(deadkeys)

store(e-key)  'e' 
store(e-out)  U+0259

store(f-key) 'f'
store(g-key) 'g'
store(f-out) U+0192
store(g-out) U+01BE 

dk(semicolon) any(e-key) > index(e-out, 2)
U+1D1F any(e-key) > index(e-out, 2)
dk(semicolon) dk(semicolon) any(f-key) any(g-key) > index(f-out, 3) index( g-out, 4)
any(f-key) dk(semicolon) > index(f-out,1) 'woo'