[SCM] GNU Autoconf source repository branch, master, updated. v2.64-17-g2d50a0e

[Ralf Wildenhues]

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- Log -----------------------------------------------------------------
commit 2d50a0ed98d3789015d63fc127d8a95af65cf8e8
Author: Bruno Haible <address@hidden>
Date:   Tue Aug 18 22:17:51 2009 +0200

    Document Solaris tr range and NUL limitations.
    
    * doc/autoconf.texi (Limitations of Usual Tools): Mention that
    Solaris /usr/bin/tr does not support ranges, nor the '\0' octal
    escape.
    
    Signed-off-by: Ralf Wildenhues <address@hidden>

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog         |    7 +++++++
 doc/autoconf.texi |   20 ++++++++++++++++----
 2 files changed, 23 insertions(+), 4 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 0c31723..1242ca6 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2009-08-18  Bruno Haible  <address@hidden>
+
+       Document Solaris tr range and NUL limitations.
+       * doc/autoconf.texi (Limitations of Usual Tools): Mention that
+       Solaris /usr/bin/tr does not support ranges, nor the '\0' octal
+       escape.
+
 2009-08-14  Eric Blake  <address@hidden>
 
        Simplify version control metadata.
diff --git a/doc/autoconf.texi b/doc/autoconf.texi
index 6bac0c3..e997962 100644
--- a/doc/autoconf.texi
+++ b/doc/autoconf.texi
@@ -17802,11 +17802,23 @@ $ @address@hidden echo moon; echo light; @} | 
/usr/ucb/tr -d '\012' ; echo}
 moonlight
 @end example
 
+Not all versions of @command{tr} recognize ranges of characters: at
+least Solaris @command{/usr/bin/tr} still fails to do so.  But you can
+use @command{/usr/xpg4/bin/tr} instead.
+
address@hidden
+$ @kbd{echo "Hazy Fantazy" | LC_ALL=C /usr/bin/tr a-z A-Z}
+HAZy FAntAZy
+$ @kbd{echo "Hazy Fantazy" | LC_ALL=C /usr/xpg4/bin/tr a-z A-Z}
+HAZY FANTAZY
address@hidden example
+
 Posix requires @command{tr} to operate on binary files.  But at least
-Solaris @command{/usr/ucb/tr} still fails to handle @samp{\0} as the
-octal escape for @code{NUL}.  On Solaris, when using @command{tr} to
-neutralize a binary file by converting @code{NUL} to a different
-character, it is necessary to use @command{/usr/xpg4/bin/tr} instead.
+Solaris @command{/usr/ucb/tr} and @command{/usr/bin/tr} still fail to
+handle @samp{\0} as the octal escape for @code{NUL}.  On Solaris, when
+using @command{tr} to neutralize a binary file by converting @code{NUL}
+to a different character, it is necessary to use
address@hidden/usr/xpg4/bin/tr} instead.
 
 @example
 $ @kbd{printf 'a\0b\n' | /usr/ucb/tr '\0' '~' | wc -c}


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