Incorrect tab handling

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Hi all,

I think that source-highlight may incorrectly convert tabs to spaces 
when the option `--gen-references' is used.
I have attached the test code to this email.
I used the following options:

$ source-highlight -d -n --gen-references=inline test.c

If the `--gen-references' option isn't specified, tabs are correctly 
processed.

Here is the software version number:

$ source-highlight --version
GNU Source-highlight 3.1.6 (library: 4:0:0)
Copyright (C) 1999-2008 Lorenzo Bettini <http://www.lorenzobettini.it>
This program comes with ABSOLUTELY NO WARRANTY.
This is free software; you may redistribute copies of the program
under the terms of the GNU General Public License.
For more information about these matters, see the file named COPYING.
$ ctags --version
Exuberant Ctags 5.8, Copyright (C) 1996-2009 Darren Hiebert
   Compiled: Feb 14 2013, 05:31:39
   Addresses: <[email protected]>, http://ctags.sourceforge.net
   Optional compiled features: +wildcards, +regex
$ uname -r
3.14.17-100.fc19.x86_64

Best regards,
Toshiaki Yoshida


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typedef uint8_t		u8;
typedef uint16_t	u16;

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