Bug (?) in compose

[Ilya Anfimov]

On Fri, Sep 30, 2016 at 04:25:20PM +0300, Clock Source wrote:
> Good day!
> 
> Please get me a tips, where I must catch bug. Not all compose
> combinations work. For example:

 Why do you think that something does not work?

> 
> <Multi_key> <s> <s>                     : "??"   ssharp # LATIN SMALL LETTER SHARP S
>  - work, xev output:
> KeyPress event, serial 39, synthetic NO, window 0x5000001,
>     root 0x262, subw 0x0, time 2509703, (375,120), root:(385,201),
>     state 0x0, keycode 0 (keysym 0xdf, ssharp), same_screen YES,
>     XLookupString gives 0 bytes: 
>     XmbLookupString gives 2 bytes: (c3 9f) "??"
>     XFilterEvent returns: False
> 
> 
> 
> <Multi_key> <f> <f>                     : "???"   Ufb00 # LATIN SMALL LIGATURE FF
>  - not work, xev output:
> KeyPress event, serial 39, synthetic NO, window 0x5000001,
>     root 0x262, subw 0x0, time 2593224, (321,71), root:(331,152),
>     state 0x0, keycode 0 (keysym 0x100fb00, UFB00), same_screen YES,
>     XLookupString gives 0 bytes: 
>     XmbLookupString gives 3 bytes: (ef ac 80) "???"
>     XFilterEvent returns: False
> 
> 
> and that work too:
> <Multi_key> <percent> <o>               : "???"   U2030 # PER MILLE SIGN
> 
> KeyPress event, serial 39, synthetic NO, window 0x5000001,
>     root 0x262, subw 0x0, time 2799406, (319,50), root:(329,131),
>     state 0x0, keycode 0 (keysym 0x1002030, U2030), same_screen YES,
>     XLookupString gives 0 bytes: 
>     XmbLookupString gives 3 bytes: (e2 80 b0) "???"
>     XFilterEvent returns: False
> 
> 
> How I may solve this puzzle?
> 
> -- 
> 	Best regards, V.
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