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bug#20385: [PATCH] Support curved quotes in doc strings

From: Dmitry Gutov
Subject: bug#20385: [PATCH] Support curved quotes in doc strings
Date: Fri, 15 May 2015 22:09:20 +0300
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.0

On 05/15/2015 09:54 PM, Paul Eggert wrote:

That's an independent issue: it can be done no matter what quoting
regime the source code uses.

Terrific. Then there's no need to worry too much about the diagnostic messages.

I'm not that worried about the cost of implementation now.  I'm worried
about the long-term cost of having a quoting regime that requires
documentation and explanation.

What's there to explain? Quoting will work as before, it'll only be displayed differently (and users could even opt out of that).

It's simpler and easier to explain if
the doc string looks the same in the UI as it does while you're editing

My "lambda"s have been rendered in Greek for quite a while. We even have a minor mode for things like this now.

For example, you can easily cut and paste from the UI into the doc
string source when composing a new doc string, which is something that
doesn't work well for either GCC or Coreutils.

Why wouldn't that work in Emacs either way?

The only place that seems like it'll have this problem is the Info buffers, but they have a lot of other markup that looks differently in the source anyway.

- Using unicode for markup is a complication (e.g. with certain mail
clients, but some other instances might come up).

It's a complication we already have, as we already use UTF-8 in a few
doc strings.  For example, the documentation for prettify-symbols-mode
uses UTF-8 curved double-quotes.

Does it? I can't find that.

But either way, allowing unicode in sources (why we do, obviously) and using unicode characters as ubiquitous markup are two very different things.

Nor do I.  This is a transition process, with the long-term goal of
> quoting via quotes rather than via grave accent and apostrophe.

If we use rendering via font-lock, there will be no transition process.

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