Re: [bug-gawk] Sample code in Gawk manual section 6.1.4

[Aharon Robbins]

Hi.

> Date: Wed, 30 Jan 2013 23:23:51 -0200
> From: Hermann Peifer <address@hidden>
> To: address@hidden
> Subject: [bug-gawk] Sample code in Gawk manual section 6.1.4
>
> Hi,
>
> I believe that 2 examples in this section do not work as described in 
> the manual. For running the tests, I changed my locale to [1].
>
>  > awk 'BEGIN { printf "%g\n", 3.1415927 }'
> 3.14159  # not 3,14159, as stated in the manual
>
>  > echo 4,321 | gawk '{ print $1 + 1 }'
> 5  # not 5,321, as stated in the manual
>
> The examples only work as documented after adding the --use-lc-numeric 
> switch.
>
>  > awk --use-lc-numeric 'BEGIN { printf "%g\n", 3.1415927 }'
> 3,14159
>
>  > echo 4,321 | gawk --use-lc-numeric '{ print $1 + 1 }'
> 5,321
>
> Hermann
>
> [1]
>  > locale
> LANG="da_DK.UTF-8"
> LC_COLLATE="da_DK.UTF-8"
> LC_CTYPE="da_DK.UTF-8"
> LC_MESSAGES="da_DK.UTF-8"
> LC_MONETARY="da_DK.UTF-8"
> LC_NUMERIC="da_DK.UTF-8"
> LC_TIME="da_DK.UTF-8"
> LC_ALL="da_DK.UTF-8"
>
>  > gawk -V
> GNU Awk 4.0.73 (GNU MPFR 3.1.1-p2, GNU MP 5.0.5)

Thanks for the report.  When that section was first written, gawk worked
as described. I later added description of --use-lc-numeric but didn't
rerun the example.  I will shortly be pushing the change below to
clarify things.

Thanks,

Arnold
--------------------------
diff --git a/doc/gawk.texi b/doc/gawk.texi
index 941d8e0..963923a 100644
--- a/doc/gawk.texi
+++ b/doc/gawk.texi
@@ -9585,18 +9585,19 @@ Here are some examples indicating the difference in 
behavior,
 on a GNU/Linux system:
 
 @example
+$ @kbd{export POSIXLY_CORRECT=1}                        @ii{Force POSIX 
behavior}
 $ @kbd{gawk 'BEGIN @{ printf "%g\n", 3.1415927 @}'}
 @print{} 3.14159
-$ @kbd{LC_ALL=en_DK gawk 'BEGIN @{ printf "%g\n", 3.1415927 @}'}
+$ @kbd{LC_ALL=en_DK.utf-8 gawk 'BEGIN @{ printf "%g\n", 3.1415927 @}'}
 @print{} 3,14159
 $ @kbd{echo 4,321 | gawk '@{ print $1 + 1 @}'}
 @print{} 5
-$ @kbd{echo 4,321 | LC_ALL=en_DK gawk '@{ print $1 + 1 @}'}
+$ @kbd{echo 4,321 | LC_ALL=en_DK.utf-8 gawk '@{ print $1 + 1 @}'}
 @print{} 5,321
 @end example
 
 @noindent
-The @samp{en_DK} locale is for English in Denmark, where the comma acts as
+The @samp{en_DK.utf-8} locale is for English in Denmark, where the comma acts 
as
 the decimal point separator.  In the normal @code{"C"} locale, @command{gawk}
 treats @samp{4,321} as @samp{4}, while in the Danish locale, it's treated
 as the full number, 4.321.
@@ -9609,7 +9610,7 @@ decimal point character.  You can use the 
@option{--use-lc-numeric}
 option (@pxref{Options}) to force @command{gawk} to use the locale's
 decimal point character.  (@command{gawk} also uses the locale's decimal
 point character when in POSIX mode, either via @option{--posix}, or the
address@hidden environment variable.)
address@hidden environment variable, as shown previously.)
 
 @ref{table-locale-affects} describes the cases in which the locale's decimal
 point character is used and when a period is used. Some of these