Bug 123274 - document with U+10FC00: character in it repeatedly hangs
Summary: document with U+10FC00: character in it repeatedly hangs
Status: RESOLVED INSUFFICIENTDATA
Alias: None
Product: LibreOffice
Classification: Unclassified
Component: Writer (show other bugs)
Version:
(earliest affected)
6.2.0.3 release
Hardware: All macOS (All)
: medium normal
Assignee: Not Assigned
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2019-02-08 19:15 UTC by tagishsimon
Modified: 2019-10-19 02:43 UTC (History)
1 user (show)

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Description tagishsimon 2019-02-08 19:15:25 UTC
Description:
I have a document with (what I think is) unicode U+10FC00 characters in it. (A quick search on the web tells me that this is an invalid character)

The document repeatedly hangs as I navigate past the U+10FC00 characters - on a Mac, I get the spinning beachball for a minute or so each time I try to move around, effectively rendering the document unusable.


Explainer for why I have U+10FC00 character in the document in the first place:

The document has text copy pasted  from a PDF  https://www.gov.scot/binaries/content/documents/govscot/publications/consultation-paper/2016/11/wild-seaweed-harvesting-strategic-environmental-assessment-environmental-report/documents/00510620-pdf/00510620-pdf/govscot%3Adocument?forceDownload=true

The pasted text is the whole of section 6.1.3, which is a set of 6 or so bullet points. The U+10FC00 characters are the bullets themselves.

The text was pasted into the LibreOffice document using shift-cmd-v and selecting Unformatted Text.



Explainer for how I identified the character as U+10FC00:
 
I've identified the characters as U+10FC00 by pasting the same text into a wikipedia edit window ... it shows them as 10FC00. (I grant I could be misleading myself and you if the edit window is really trying to say "you gave my some junk characters, and I'm giving you a junk character indicator in return.)


BDD
As a LibreOffice Write user, I wish to be able to
- Paste section 6.1.3 of the above PDF into a write document using shirt-cmd-v & selecting the unformatted text option
- Use the write document without having to wait for ~1 minute each time I navigate past the pasted section.



Steps to Reproduce:
1. download https://www.gov.scot/binaries/content/documents/govscot/publications/consultation-paper/2016/11/wild-seaweed-harvesting-strategic-environmental-assessment-environmental-report/documents/00510620-pdf/00510620-pdf/govscot%3Adocument?forceDownload=true

2. navigate to section 6.1.3

3. select and copy to clipboard all of 6.1.3

4. open Write document

5. paste-special using cmd-shift-v and selecting unformatted text

Actual Results:
the text copies, but the document hangs when navigating past the text

Expected Results:
the text copies, but the document DOES NOT hang when navigating past the text


Reproducible: Always


User Profile Reset: No



Additional Info:
Comment 1 tagishsimon 2019-02-08 19:17:57 UTC
I should note this is not an issue particularly connected with the new release; it was happening on a machine with an earlier LibreOffice version & continued to happen after I upgraded to the current 6.2.0.3 version.
Comment 2 Eike Rathke 2019-02-08 20:19:30 UTC
FWIW, U+10FC00 is not an invalid character; that code point belongs to the Supplementary Private Use Area-B (plane SPUA-B) in the range U+100000..U+10FFFF

My wild guess is that either the UTF-16 encoding of High Private Use Surrogates (U+DB80..U+DBFF) might come cross there, or trying to find a font that contains a glyph for the private use code point is, surprise surprise, unsuccessful.
Comment 3 tagishsimon 2019-02-08 20:27:13 UTC
Yup, the idea that Write was searching for a way of rendering whatever junk it had been given crossed my mind.

But the issue remains: users will paste stuff like this into their documents, and right now doing so a) seems to be a poison-pill with no antidote and b) LibroOffice gives no clue whatsoever about what's going on / going wrong.
Comment 4 Alex Thurgood 2019-02-11 08:44:30 UTC
No repro for me with :

Version: 6.3.0.0.alpha0+
Build ID: e9db8eceff48290be72591f7422b4fc45e5752fc
CPU threads: 4; OS: Mac OS X 10.14.2; UI render: default; VCL: osx; 
Locale: fr-FR (fr_FR.UTF-8); UI-Language: en-US
Calc: threaded

Mac mini (fin 2014)
2.6 GHz Intel Core i5
8Gb 1600 MHz DDR3
Intel Iris 1536 Mb
1920 x 1080 resolution screen
Comment 5 Xisco Faulí 2019-03-21 12:06:26 UTC
Hello,
LibreOffice 6.2.2.2 is going to be released today, could you please try again
with this version to see if the problem has been resolved meanwhile? Thanks in
advance
Comment 6 QA Administrators 2019-09-18 02:55:21 UTC Comment hidden (obsolete)
Comment 7 QA Administrators 2019-10-19 02:43:41 UTC
Dear tagishsimon,

Please read this message in its entirety before proceeding.

Your bug report is being closed as INSUFFICIENTDATA due to inactivity and
a lack of information which is needed in order to accurately
reproduce and confirm the problem. We encourage you to retest
your bug against the latest release. If the issue is still
present in the latest stable release, we need the following
information (please ignore any that you've already provided):

a) Provide details of your system including your operating
   system and the latest version of LibreOffice that you have
   confirmed the bug to be present

b) Provide easy to reproduce steps – the simpler the better

c) Provide any test case(s) which will help us confirm the problem

d) Provide screenshots of the problem if you think it might help

e) Read all comments and provide any requested information

Once all of this is done, please set the bug back to UNCONFIRMED
and we will attempt to reproduce the issue. Please do not:

a) respond via email 

b) update the version field in the bug or any of the other details
   on the top section of our bug tracker

Warm Regards,
QA Team

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