Re: with-wrapper-hook is obsolete; how to replace it?

[Stefan Monnier <monnier@iro.umontreal.ca>]

[ Hmm... I can't seem to see my reply, so I'll send it again.  ]

> When I run ‘make compile-always’ from the lisp subdirectory I see diagnostics
> like this:

> In buffer-substring--filter:
> simple.el:4058:52:Warning: ‘with-wrapper-hook’ is an obsolete macro (as of
>     24.4); use a <foo>-function variable modified by ‘add-function’.

> How do I alter the code to use add-function instead?

Here's a translation table:

  +---------------------+-----------------+----------------+
  |  with-wrapper-hook  |  foo-functions  |  add-hook      |
  +---------------------+-----------------+----------------+
  |  funcall            |  foo-function   |  add-function  |
  +---------------------+-----------------+----------------+

This replacement has already been done in buffer-substring, but we still
need to use the obsolete with-wrapper-hook in order to support the
corresponding obsolete filter-buffer-substring-functions variable.


        Stefan