Hello,
Tamil is a script that requires "special characters" support in text
mode. When you open in Oxygen a document that contains such script (with
default options) you are prompted to Enable/Disable support for
bidirectional text and special characters. When this support is enabled,
the performance is affected significantly. Larger documents incur a more
significant performance penalty. By default *this support is disabled
for files larger than 300KB, but performance can be acceptable for up to
800KB.*
https://www.oxygenxml.com/doc/versions/26.0/ug-editor/topics/bidirectional-support.html
if I edit in text mode a file containing the equivalent of 60 pages
(which has a *size of 693 kB*), I can no longer trust what I see and
have to enter the Tamil text without paying attention to the position
of the cursor, which is far to the right side of the actual insertion
position.
Why is that the case?
To answer your question, if you have the default limit of 300k in Oxygen
and are editing a file that is larger, the "special characters" support
is disabled without notification. With the support disabled, it is
normal for the cursor positioning and editing to be "off".
If you want to have it enabled, go to Options > Preferences, Editor >
Open/Save and in the section "Support for Special Characters" *configure
the 'Disable special characters support for documents larger than
(characters)' limit to 800k*. If you feel confident it will hold, you
could clear the Disable box (so that it never gets disabled), but be
aware that the larger the document, the more it will slow down, up to
making it appear as hanged. If you disable the limit, I would advise to
at least set it to "Prompt for each document", so you can disable it
yourself when it's not needed.
Why is a text editor such as Notepad++ capable of doing what oXygen
cannot do, with respect to rendering text containing complex scritps
such as Tamil?
Oxygen XML Editor is a Java application and at least for the text mode
it uses the support that Java implements for rendering texts and
managing cursor positions. When dealing with large file sizes and
special scripts, the Java implementation struggles to efficiently handle
the text rendering and cursor positioning due the complexity and nuances
of the script that is not handled natively.
On the other hand, text editors like Notepad++, which are solely built
for handling text files, might perform better with large files and
complex scripts because they use native methods (OS support) to render
and manage cursor positions in the text.
Regards,
Adrian
Adrian Buza
oXygen XML Editor and Author Support
On 24.10.2023 23:41, Jean-Luc Chevillard wrote:
Dear list,
I have often wondered why the size limit so low for comfortably
editing files in text mode in scripts such as Tamil?
I am currently editing an ancient Portuguese-Tamil dictionary
and as soon as the file size reaches a certain size, I can no longer
trust the cursor position.
To give an example,
if I edit today in text mode a file containing the equivalent of one
page, which has a size of 23 kB, I can trust the position of the cursor
on screen to show me where the next Tamil character will be inserted.
HOWEVER, if I edit in text mode a file containing the equivalent of 60
pages (which has a size of 693 kB), I can no longer trust what I see
and have to enter the Tamil text without paying attention to the
position of the cursor, which is far to the right side of the actual
insertion position.
Why is that the case?
Why is a text editor such as Notepad++ capable of doing what oXygen
cannot do, with respect to rendering text containing complex scritps
such as Tamil?
Am I doing something wrong?
I would like to know
Thanks for any solution provided
-- Jean-Luc Chevillard
https://htl.cnrs.fr/equipe/jl-chevillard/
P.S. The problem does not occur in Author mode, but one does not
always want to define a .CSS
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