[wx-dev] [ wxwindows-Bugs-1460302 ] wxExpandEnvVars: incorrect escape char. handling on Windows

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Bugs item #1460302, was opened at 2006-03-28 22:27
Message generated for change (Comment added) made by neis
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Category: Common
Group: Platform specific
>Status: Closed
>Resolution: Invalid
Priority: 5
Private: No
Submitted By: Dmitry Dembinsky (xlogger)
Assigned to: Nobody/Anonymous (nobody)
Summary: wxExpandEnvVars: incorrect escape char. handling on Windows

Initial Comment:
wxExpandEnvVars misinterprets '$' character in the path:
e.g. 

wxExpandEnvVars("c:\\WINDOWS\\$hf_mig$")
returns
"c:\\WINDOWS$hf_mig$"

Consequently, wxFileName::Normalize() method (using
wxExpandEnvVars internally) produces incorrect result.


Excerpted from wx src/common/config.cpp
---------------------------------------
      case '\\':
        // backslash can be used to suppress special
meaning of % and $
        if ( n != str.Len() - 1 &&
                (str[n + 1] == wxT('%') || str[n + 1]
== wxT('$')) ) {
          strResult += str[++n];

          break;
        }
---------------------------------------

In Windows, however, '$' character has no special
meaning and may not be escaped.

----------------------------------------------------------------------

>Comment By: Stefan Neis (neis)
Date: 2008-05-12 15:45

Message:
Logged In: YES 
user_id=32202
Originator: NO

It doesn't have a built-in special meaning , however, to simplify users
life, it supports it with the same meaning as other platforms do. The
workaround is to use "\\\\$", if you really mean a backslash followed by a
$.

----------------------------------------------------------------------

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