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

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Message #118 received at 25309-done <at> debbugs.gnu.org (full text, mbox):

From: Gennady Uraltsev <gennady.uraltsev <at> gmail.com>
To: Mosè Giordano <mose <at> gnu.org>, Tassilo Horn <tsdh <at> gnu.org>
Cc: Uwe Brauer <oub <at> mat.ucm.es>, 25309-done <at> debbugs.gnu.org
Subject: Re: bug#25309: 11.89.8; multi-level script fontification stacks
 incorrectly
Date: Wed, 4 Jan 2017 15:52:25 +0300

[Message part 1 (text/plain, inline)]

Hello Everyone,

I was testing out this new mode and there seems still to be some small
problem. The simplest case is as follows:

write the following

$1=x^2$

in the standard order and make sure that electric $ mode is off i.e. the
typing should look like this (with | being the cursor):

|
$|
$1|
$1=|
$1=x|
$1=x^|
$1=x^2|
$1=x^2$|

Everything works fine. However let's try this order:

|
$|
$1|
$1=|
$1=x|
$1=x$|
$1=x|$
$1=x^|$
$1=x^2|$

Notice that $ is then "raised". Now erase the exponents by doing
$1=x^2|$
$1=x^|$
$1=x^$
The problem is that the closing $ is still raised.


When I have more info I'll write more.

Cheers,

Gennady


On 03/01/17 18:57, Mosè Giordano wrote:
> 2017-01-03 16:27 GMT+01:00 Tassilo Horn <tsdh <at> gnu.org>:
>> Ok, there's a new variable `font-latex-fontify-script-max-level' which
>> defines up to which scriptification level the script faces are applied
>> again (thereby causing the decrease in font size).
>>
>>> In my pixelated example, position of the baseline starts to be wrong
>>> after the fifth nested script (but this depends on the font and its
>>> size), maybe we can stop scaling after the ~4th nested script?
>>
>> A problem of the previous version of the feature was that the raise
>> factors were just added up and didn't account for the fact that the font
>> size also shrinks.  In the current version, with each level the addition
>> to the raise value gets smaller (about 80% of the previous addition).
> 
> I think it's perfect now for most cases!  Thank you so much.
> 
> Bye,
> Mosè
> 

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