Re: Unhelpful text in C-h v search-default-mode

[Emanuel Berg <incal@dataswamp.org>]

Juri Linkov wrote:

>> In a recent master branch Emacs, (not with -Q), from an info buffer, I
>> did C-h v search-default-mode.  The text printed in *Help* included this:
>>
>>     Its value is
>>     #<subr F616e6f6e796d6f75732d6c616d626461_anonymous_lambda_109>
>>     Original value was nil
>>     Local in buffer *info*<3>; global value is nil
>>
>> ..  This is quite frankly entirely unhelpful; it gives no way to find out
>> what the lambda is, in particular, no way to get to its source code.  It
>> isn't even possible to disassemble the function.
>
> Another example:
>
> 0. emacs -Q
> 1. M-x list-timers
>
>    *     0.1s     t show-paren-function
>    *     0.5s     t #<subr F616e6f6e796d6f75732d6c616d626461_anonymous_lambda_13>
>
> I wonder how users are supposed to know what function it is?
> Searching by the delay number 0.5 reveals this lambda comes
> from
>
>         (setq jit-lock-context-timer
>               (run-with-idle-timer jit-lock-context-time t
>                                    (lambda ()
>                                      (unless jit-lock--antiblink-grace-timer
>                                        (jit-lock-context-fontify)))))

One will know it by not using an anonymous function (a lambda)
but making a proper function and giving it a descriptive name,
as you see with `show-paren-function' in your own example :)

-- 
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