>>> This patch adds long-awaited customization to char-fold.el:
>>
>> I noticed that its compilation fails with:
>>
>>     ELC      char-fold.elc
>>   In toplevel form:
>>   char-fold.el:153:31:Error: Symbol's value as variable is void: char-fold-include-base
>>   Makefile:296: recipe for target 'char-fold.elc' failed
>>   make[2]: *** [char-fold.elc] Error 1
>>
>> So a new patch added 'eval-and-compile' to all defcustoms:
>
> Will it actually work for a user to customize this?  It looks like the
> values are used during compile time, so after changing the value the
> user would have to recompile char-fold.el?

Oh, right.  Do you see a problem with a better patch: