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Groups > comp.os.linux.development.apps > #219

Checking if the terminal supports Unicode programmatically

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What is the best way to check if the terminal supports Unicode or not?
Is there a capability in terminfo that can be queried? or is there a
specific environment variable that indicates Unicode support. For example
must TERM=unicode for a Unicode terminal? Or what is the test for this?
A configuration check, rather than a physical enquiry to the terminal would
be fine. However, the terminal may be a /dev/pts from a telnet session and
it would be useful to know if the terminal supports Unicode or not?

I want to achieve something like this pseudocode:

IF terminalsupportsunicode == true THEN
  useunicode = true
  echo "\u0394"    # Unicode delta
ELSE
  useunicode = false
  echo "This terminal does not support Unicode. Reverting to ASCII."
ENDIF

-- 
Mark Hobley
Linux User: #370818  http://markhobley.yi.org/

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Checking if the terminal supports Unicode programmatically Mark Hobley <markhobley@yahoo.donottypethisbit.co> - 2011-07-24 21:48 +0000
  Re: Checking if the terminal supports Unicode programmatically Måns Rullgård <mans@mansr.com> - 2011-07-24 23:28 +0100
    Re: Checking if the terminal supports Unicode programmatically Richard Kettlewell <rjk@greenend.org.uk> - 2011-07-25 09:05 +0100

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