GNU bug report logs - #25309
11.89.8; multi-level script fontification stacks incorrectly

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From: Tassilo Horn <tsdh <at> gnu.org>
To: Mosè Giordano <mose <at> gnu.org>
Cc: Uwe Brauer <oub <at> mat.ucm.es>, 25309-done <at> debbugs.gnu.org, Gennady Uraltsev <gennady.uraltsev <at> gmail.com>
Subject: bug#25309: 11.89.8; multi-level script fontification stacks incorrectly
Date: Thu, 05 Jan 2017 14:01:30 +0100

Mosè Giordano <mose <at> gnu.org> writes:

Hi Mosè,

> However, I don't think it completely solves the problem I reported,
> just works around it ;-) This is more evident in multi-level mode, see
> the attached screenshot (I swear it's there this time!).

Oh, it is indeed!

> The caret is (almost always) in the wrong position, compared to the
> number it is raising.  In my opinion, the top of the caret should line
> up with the top of what it raises, see the "^{2}" in the text line
> below the equation.  Of course, something similar for the underscore.

The problem was that the face/display specs for the script chars
replaced the existing specs (math and sub/superscript), thus they were
never shrunken.  Now I prepend the spec which means that the shrinking
happens also for ^_ which are themselves part of a sub- or superscript.

Bye,
Tassilo

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