bug#23465: 25.0.93; `lambda' after hash-quote not highlighted as keyword

[Anders Lindgren]

Hi!

> I looked at the uses of define-lex-block-type-analyzer I could
> find in Emacs's trunk and they look OK to me.  I also looked at the
> definition of define-lex-block-type-analyzer and its highlighting also
> looked fine to me.

It was the definition I was referring to. (I just picked it as an example, as it uses many macros.)

Anyway, I'll drop the idea (or implement it as a stand-alone package, if I ever get around to it) as it apparently didn't resonate well here.

> Anyway, we're striding away from the subject here. I'll commit the fix for
> the "lambda" problem on the master branch and leave it broken on emacs-25.

Not sure I like this fix: it causes the `if` of #'(if bar baz) to be
highlighted even though it's not a special form nor a macro in
that position.

It is already highlighted in that context, today, even without my patch. ("if" is a special form whereas "lambda" isn't.)

Also, I've looked through a lot of elisp code, and the only two uses of hash-quote I found were #'symbol and #'(lambda (...) ...).

Besides, I don't mind having keywords highlighted in quoted or hash-quoted expressions. In fact, in elisp, code is often written in a quoted context, e.g. in font-lock keywords, where highlighting of special forms still makes sense.

If you have a better way to handle this (e.g. making "lambda" a special form), feel free to suggest another patch.

    -- Anders