Re: Is it save to dig into comment contents of PropList.txt?

Karl Williamson <public_at_khwilliamson.com> wrote:
 |On 11/07/2013 05:58 AM, Steffen Daode Nurpmeso wrote:
 |> Karl Williamson <public_at_khwilliamson.com> wrote:
 |>|On 11/06/2013 03:43 AM, Steffen Daode Nurpmeso wrote:
 |>|> Philippe Verdy <verdy_p_at_wanadoo.fr> wrote:
 |>|>|TAB is "printable" (for the isprint() macro in standard \
 |>|>|C librries) because
 |>|>
 |>|> Nope according to POSIX, Vol. 1: Base Definitions, 7.3.1. LC_CTYPE ([1]):
 |>|
 |>|The only vendor I'm aware of that makes TAB a printable is Microsoft.
 |>
 |> That made me curious, and it doesn't seem to be right [1].
 |
 |I have various tests that run through all a machine's locales looking
 |for violations of the Posix standard. When run on MS machines, they
 |fail as I've described. Perhaps those machines have old, buggy
 |implementations that have been fixed.

It surely wasn't my intention to impeach you; neither do i have
those tests nor do i use hardware which runs the system in
question (well, there's a very old box with 95 B on one partition,
but i used it last once i checked wether it would make sense to
extend a nasm(1) package to be «masm compatible», as in

  ?0[steffen_at_sherwood tmp]$ grep -i dos ~/calendar
  04/11 Assembler Testprogramm hängt DOS auf (B-}, 2001)

so that was a one-hundred-percent no-go.)

--steffen

attached mail follows:

On 11/07/2013 05:58 AM, Steffen Daode Nurpmeso wrote:
> Karl Williamson <public_at_khwilliamson.com> wrote:
> |On 11/06/2013 03:43 AM, Steffen Daode Nurpmeso wrote:
> |> Philippe Verdy <verdy_p_at_wanadoo.fr> wrote:
> |>|2013/11/5 Steffen Daode <sdaoden_at_gmail.com>
> |>|> (The problem i'm facing is that _PRINT and _GRAPH cannot be set
> |>|> for some properties from PropList.txt, say, _PRINT can't be set
> |>|> for U+0009, CHARACTER TABULATION (ht), since it's a Cc, but in
> |>|
> |>|TAB is "printable" (for the isprint() macro in standard \
> |>|C librries) because
> |>
> |> Nope according to POSIX, Vol. 1: Base Definitions, 7.3.1. LC_CTYPE ([1]):
> |
> |The only vendor I'm aware of that makes TAB a printable is Microsoft.
> |Thus Philippe is wrong about this except for MS products.
>
> That made me curious, and it doesn't seem to be right [1].
>
> isprint returns a nonzero value if c is a printable character—this
> includes the space character (0x20 – 0x7E).
>
> The behavior of isprint and _isprint_l is undefined if c is not
> EOF or in the range 0 through 0xFF, inclusive. When a debug CRT
> library is used and c is not one of these values, the functions
> raise an assertion.
>
> [1] <http://msdn.microsoft.com/en-us/library/ewx8s4kw(v=vs.110).aspx>
>

I have various tests that run through all a machine's locales looking
for violations of the Posix standard. When run on MS machines, they
fail as I've described. Perhaps those machines have old, buggy
implementations that have been fixed.
Received on Fri Nov 15 2013 - 05:41:44 CST