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## Re: Preventing accidental prefix match in input-method

 From: Stefan Monnier Subject: Re: Preventing accidental prefix match in input-method Date: Fri, 23 Nov 2018 16:51:58 -0500 User-agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux)

>> I'd like to setup an input method where I have a mapping
>>
>>     \b  =>  β
>>
>> but where I'd like it that when the user enters \beta
>> the result is \beta rather than βeta.
>>
>> I know I can do it by adding mappings
>>
>>     \ba  =>  \ba
>>     \bb  =>  \bb
>>     \bc  =>  \bc
>>     \bd  =>  \bd
>>     \be  =>  \be
>>     ...
>>
>> but that would blow up my input method by a factor 50.
>> Is there a better solution?
>
> Would adding a mapping from βeta to \beta work?

I didn't mean that only \beta stays untouched, sorry.
\big should also stay as \big rather than be turned into βig, and
same for all other \b<something> where <something> is made up of
alphabetic characters.

IOW I'd like to be able to say something like "\b is rewritten to β but
only if immediately followed by a word boundary".

Stefan