Re: Why M-x highlight-regexp does not work after sort in tabulated-list-mode?

[Michael Heerdegen]

Jean Louis <bugs@gnu.support> writes:

> I am trying to understand this. Here is the problem, step by step:
>
> 1. {M-x package-list-packages RET}
>
> 2. {M-x highlight-regexp RET gnu RET RET} this will highlight word
>    "gnu" everywhere
>
> 3. Click to sort the list by column like "Version"
>
> 4. Highlights are lost, and I can understand that. 
>
>    But {M-x highlight-regexp RET gnu RET RET} does not work any more
>    at this point.
>
> This was already on the mailing list, but I have forgot what to do to
> remedy this.

It was your Bug#53771.  We didn't come to a nice solution in that
report, so your memory is fine in that regard.

The problem was that you are working with a non-font-lock-mode buffer,
so highlighting is not automatically updated.  OTOH, repeating
highlight-regexp with the same pattern does nothing.  So I think you
must first remove the pattern (unhighlight) and then add it again.  You
can try to do this automatically.

Michael.