*printf fix - ' flag

[Jeff Johnston]

Patch checked in.

-- Jeff J.

Eric Blake wrote:
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> POSIX requires %'d to print a decimal separated by the thousands
> separator.  Fortunately for newlib, the thousands separator in the C
> locale is the empty string.  I also discovered that my previous patch to
> support %zu and friends was incomplete, since it didn't support %1$zu.
> 
> 2006-11-14  Eric Blake  <ebb9@byu.net>
> 
> 	* libc/stdio/vfprintf.c (_vfprintf_r): Support ' flag.
> 	(chclass): ' is a flag.  j, t, and z are modifiers.
> 
> - --
> Life is short - so eat dessert first!
> 
> Eric Blake             ebb9@byu.net
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> Comment: Public key at home.comcast.net/~ericblake/eblake.gpg
> Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org
> 
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> 
> ------------------------------------------------------------------------
> 
> Index: libc/stdio/vfprintf.c
> ===================================================================
> RCS file: /cvs/src/src/newlib/libc/stdio/vfprintf.c,v
> retrieving revision 1.46
> diff -u -p -r1.46 vfprintf.c
> --- libc/stdio/vfprintf.c	26 Sep 2006 21:22:19 -0000	1.46
> +++ libc/stdio/vfprintf.c	14 Nov 2006 13:54:18 -0000
> @@ -610,6 +610,12 @@ _DEFUN(_VFPRINTF_R, (data, fp, fmt0, ap)
>  
>  rflag:		ch = *fmt++;
>  reswitch:	switch (ch) {
> +		case '\'':
> +		  /* In the C locale, LC_NUMERIC requires
> +		     thousands_sep to be the empty string.  And since
> +		     no other locales are supported (yet), this flag
> +		     is currently a no-op.  */
> +		  goto rflag;
>  		case ' ':
>  			/*
>  			 * ``If the space and + flags both appear, the space
> @@ -1495,7 +1501,7 @@ _CONST static CH_CLASS chclass[256] = {
>    /* 08-0f */  OTHER,   OTHER,   OTHER,   OTHER,   OTHER,   OTHER,   OTHER,   OTHER,
>    /* 10-17 */  OTHER,   OTHER,   OTHER,   OTHER,   OTHER,   OTHER,   OTHER,   OTHER,
>    /* 18-1f */  OTHER,   OTHER,   OTHER,   OTHER,   OTHER,   OTHER,   OTHER,   OTHER,
> -  /* 20-27 */  FLAG,    OTHER,   OTHER,   FLAG,    DOLLAR,  OTHER,   OTHER,   OTHER,
> +  /* 20-27 */  FLAG,    OTHER,   OTHER,   FLAG,    DOLLAR,  OTHER,   OTHER,   FLAG,
>    /* 28-2f */  OTHER,   OTHER,   STAR,    FLAG,    OTHER,   FLAG,    DOT,     OTHER,
>    /* 30-37 */  ZERO,    DIGIT,   DIGIT,   DIGIT,   DIGIT,   DIGIT,   DIGIT,   DIGIT,
>    /* 38-3f */  DIGIT,   DIGIT,   OTHER,   OTHER,   OTHER,   OTHER,   OTHER,   OTHER,
> @@ -1504,9 +1510,9 @@ _CONST static CH_CLASS chclass[256] = {
>    /* 50-57 */  OTHER,   OTHER,   OTHER,   SPEC,    OTHER,   SPEC,    OTHER,   SPEC, 
>    /* 58-5f */  OTHER,   OTHER,   OTHER,   OTHER,   OTHER,   OTHER,   OTHER,   OTHER,
>    /* 60-67 */  OTHER,   OTHER,   OTHER,   SPEC,    SPEC,    SPEC,    SPEC,    SPEC, 
> -  /* 68-6f */  MODFR,   SPEC,    OTHER,   OTHER,   MODFR,   OTHER,   OTHER,   SPEC, 
> -  /* 70-77 */  SPEC,    MODFR,   OTHER,   SPEC,    OTHER,   SPEC,    OTHER,   OTHER,
> -  /* 78-7f */  SPEC,    OTHER,   OTHER,   OTHER,   OTHER,   OTHER,   OTHER,   OTHER,
> +  /* 68-6f */  MODFR,   SPEC,    MODFR,   OTHER,   MODFR,   OTHER,   OTHER,   SPEC, 
> +  /* 70-77 */  SPEC,    MODFR,   OTHER,   SPEC,    MODFR,   SPEC,    OTHER,   OTHER,
> +  /* 78-7f */  SPEC,    OTHER,   MODFR,   OTHER,   OTHER,   OTHER,   OTHER,   OTHER,
>    /* 80-87 */  OTHER,   OTHER,   OTHER,   OTHER,   OTHER,   OTHER,   OTHER,   OTHER,
>    /* 88-8f */  OTHER,   OTHER,   OTHER,   OTHER,   OTHER,   OTHER,   OTHER,   OTHER,
>    /* 90-97 */  OTHER,   OTHER,   OTHER,   OTHER,   OTHER,   OTHER,   OTHER,   OTHER,