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[Pander <1030575@xxxxxxxxxxxxxxxxxx>]

** Tags added: packaging

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https://bugs.launchpad.net/bugs/1030575

Title:
  Advise user to install poppler-data if applicable

Status in Evince:
  New
Status in evince package in Ubuntu:
  Triaged

Bug description:
  In order to display CJK fonts, Evince needs the package "poppler-data"
  to be installed.  If "poppler-data" isn't installed, any CJK text in a
  document is invisible, and Evince doesn't indicate to the user why the
  text is invisible.

  Suggested enhancement to Evince:  
  (modified from https://bugs.launchpad.net/ubuntu/+source/poppler/+bug/197537/comments/26 )
  'What needs to be done is for Evince to display a warning like "CJK font support is included in the package poppler-data, which is currently not installed on your system" in these cases.'  

  An intended solution has been made (documented in https://bugs.launchpad.net/ubuntu/+source/language-selector/+bug/893920 )
  by modifying language-selector, starting with Ubuntu 12.04, to install poppler-data unconditionally.  

  Even so, there are still some reasons for the suggested enhancement to Evince:  
   * Someone may un-install poppler-data, either accidentally or on purpose, (if Evince was un-installed as part of this, then Evince may then be re-installed without poppler-data,) then try to view a file in Evince that contains CJK fonts.  
   * I don't know much about language-selector, so I suppose there may be cases when language-selector doesn't run, either on upgrade from a version of Ubuntu prior to 12.04, or on a new install of 12.04 or higher.  
   * If the issue is addressed upstream (that is, in Evince), then users of other Linux distros would benefit.  I am reporting this issue against Ubuntu instead of upstream because of the relevancy of language-selector, which is specific to Ubuntu.  

  The issue of invisible "CJK" fonts can affect PDF documents that
  contain only Latin-alphabet characters but were produced by software
  that is set up for CJK speakers.  So the issue can affect non-CJK-
  speaking Evince users.

  My Evince package version is 2.32.0-0ubuntu12.4 on Ubuntu 11.04
  (natty).

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