[Bug 986008] Re: Strange character showing in file listing in Nautilus in some views, for Thai language file names

[Sebastien Bacher]

** Description changed:

+ Impact: the default filemanager renders thai filenames incorrectly
+ 
+ Development Fix: the bug has been fixed in quantal
+ 
+ Stable Fix: it's a trivial patch coming from
+ https://bugzilla.gnome.org/show_bug.cgi?id=677090 (upstream bug report)
+ 
+ Regression Potential: could break thai string rendering in another way
+ but it seems pretty unlikely since it adds a special rules for the
+ specific char which was rendered in a buggy way
+ 
+ Test Case:
+ - download the document from comment #10
+ - open the folder where it's downloaded in nautilus
+ - see if the filename is correct or there are square chars like in screenshot in comment #3
+ 
+ ...
+ 
  In some views in Nautilus, there is a strange character appearing right
  after particular characters such as . (dot) and - (dash) when using Thai
  script in the file name.
  
  Note that this does not happen in List view (Ctrl-2) , only icon view
  (either Ctrl-1 or Ctrl-3).  Also, when renaming a file, the strange
  character disappears during the editing of the filename. (But re-appears
  just before any dots, dashes or underscores after renaming).
  
  I attach some screen shots.   Screenshots 1 and 3 show the problem, with
  the character appearing in front of a dot or dash.  Screenshot 2 (list
  view) show that there is no issue there.  Screenshot 4 shows what
  happens when renaming a file: the strange character(s) disappear.
  
  Note when I take a file name and insert a dot or dash at any point
  within the Thai name, the strange character appears in the affected
  views.   This seems to happen only with dot and dash and underscore, but
  not with regular a-z characters or characters like #, $, ! etc.  (I did
  not try all 128 low ascii characters though).
  
  EDIT: I can only add one attachment.  Will add the other ones in follow-
  up comments.
  
  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: nautilus 1:3.4.1-0ubuntu1
  ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14
  Uname: Linux 3.2.0-23-generic x86_64
  ApportVersion: 2.0.1-0ubuntu5
  Architecture: amd64
  Date: Fri Apr 20 10:41:58 2012
  GsettingsChanges:
   org.gnome.nautilus.window-state geometry '1154x546+125+114'
   org.gnome.nautilus.window-state start-with-status-bar true
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120301)
  ProcEnviron:
   LANGUAGE=en_US:en
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: nautilus
  UpgradeStatus: No upgrade log present (probably fresh install)

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https://bugs.launchpad.net/bugs/986008

Title:
  Strange character showing in file listing in Nautilus in some views,
  for Thai language file names

Status in Pango - Layout and Text Rendering LIbrary:
  New
Status in “pango1.0” package in Ubuntu:
  Fix Released
Status in “pango1.0” source package in Precise:
  Fix Committed

Bug description:
  Impact: the default filemanager renders thai filenames incorrectly

  Development Fix: the bug has been fixed in quantal

  Stable Fix: it's a trivial patch coming from
  https://bugzilla.gnome.org/show_bug.cgi?id=677090 (upstream bug
  report)

  Regression Potential: could break thai string rendering in another way
  but it seems pretty unlikely since it adds a special rules for the
  specific char which was rendered in a buggy way

  Test Case:
  - download the document from comment #10
  - open the folder where it's downloaded in nautilus
  - see if the filename is correct or there are square chars like in screenshot in comment #3

  ...

  In some views in Nautilus, there is a strange character appearing
  right after particular characters such as . (dot) and - (dash) when
  using Thai script in the file name.

  Note that this does not happen in List view (Ctrl-2) , only icon view
  (either Ctrl-1 or Ctrl-3).  Also, when renaming a file, the strange
  character disappears during the editing of the filename. (But re-
  appears just before any dots, dashes or underscores after renaming).

  I attach some screen shots.   Screenshots 1 and 3 show the problem,
  with the character appearing in front of a dot or dash.  Screenshot 2
  (list view) show that there is no issue there.  Screenshot 4 shows
  what happens when renaming a file: the strange character(s) disappear.

  Note when I take a file name and insert a dot or dash at any point
  within the Thai name, the strange character appears in the affected
  views.   This seems to happen only with dot and dash and underscore,
  but not with regular a-z characters or characters like #, $, ! etc.
  (I did not try all 128 low ascii characters though).

  EDIT: I can only add one attachment.  Will add the other ones in
  follow-up comments.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: nautilus 1:3.4.1-0ubuntu1
  ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14
  Uname: Linux 3.2.0-23-generic x86_64
  ApportVersion: 2.0.1-0ubuntu5
  Architecture: amd64
  Date: Fri Apr 20 10:41:58 2012
  GsettingsChanges:
   org.gnome.nautilus.window-state geometry '1154x546+125+114'
   org.gnome.nautilus.window-state start-with-status-bar true
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120301)
  ProcEnviron:
   LANGUAGE=en_US:en
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: nautilus
  UpgradeStatus: No upgrade log present (probably fresh install)

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