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

[Juri Linkov]

> 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)))))