Re: Fix for 587232, "-" replaced by "\$perp$"

Alex,

What is "BnZr" and why it reduces the chance of collision ?
Why don't translate at all (I mean writing #0) ?

Igor.

----- Original Message ----- 
From: "Alex Cherepanov" <[email protected]>
To: <[email protected]>
Sent: Sunday, January 04, 2004 11:05 PM
Subject: [gs-code-review] Fix for 587232, "-" replaced by "\$perp$"


> Transliterate '\0' character in PDF names to "BnZr" instated of
> '?' to reduce the chance of name collision.
>
> DETAILS:
> TeX generates Type 3 fonts with single character glyph names
> equal to the character codes, i.e. /Encoding [(\000) cvn (\001)
> cvn ... /? ...] . PDF writer used to transliterate '\0' to '?' because
> #00 escape is invalid. This conflicts with /? glyph name, which
> also occurs in the same font.
>


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> Index: gs/src/gdevpdfu.c
> ===================================================================
> RCS file: /cvs/ghostscript/gs/src/gdevpdfu.c,v
> retrieving revision 1.43
> diff -b -u -r1.43 gdevpdfu.c
> --- gs/src/gdevpdfu.c 14 Oct 2003 20:37:15 -0000 1.43
> +++ gs/src/gdevpdfu.c 4 Jan 2004 19:16:09 -0000
> @@ -799,7 +799,7 @@
>   stream_puts(s, hex);
>   break;
>       case 0:
> - stream_putc(s, '?');
> + stream_puts(s, "BnZr"); /* arbitrary */
>   }
>      }
>      return 0;
>


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