[SCM] GNU Autoconf source repository branch, master, updated. v2.68-4-gefa1274

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- Log -----------------------------------------------------------------
commit efa127444a7a0d6c81896bbacb7a7cc48ab9fff1
Author: Eric Blake <[email protected]>
Date:   Tue Oct 5 09:59:56 2010 -0600

    doc: suggest a few more workarounds
    
    * doc/autoconf.texi (Limitations of Usual Tools) <tr>: Mention
    that 'redundant' brackets can work around Solaris bug.
    (File Descriptors): Mention that {} works as well as () for
    silencing file-not-found warnings.
    * THANKS: Update.
    Suggested by Pádraig Brady.
    
    Signed-off-by: Eric Blake <[email protected]>

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

Summary of changes:
 ChangeLog         |   10 ++++++++++
 THANKS            |    1 +
 doc/autoconf.texi |   11 +++++++----
 3 files changed, 18 insertions(+), 4 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index d7102e3..576f615 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -4,6 +4,16 @@
 	* doc/autoconf.texi (Configuration Actions): Fix typo.
 	* THANKS: Update.
 
+2010-10-05  Eric Blake  <[email protected]>
+
+	doc: suggest a few more workarounds
+	* doc/autoconf.texi (Limitations of Usual Tools) <tr>: Mention
+	that 'redundant' brackets can work around Solaris bug.
+	(File Descriptors): Mention that {} works as well as () for
+	silencing file-not-found warnings.
+	* THANKS: Update.
+	Suggested by Pádraig Brady.
+
 2010-09-24  Ralf Wildenhues  <[email protected]>
 
 	tests: normalize trailing spaces in gcc -E -dD output.
diff --git a/THANKS b/THANKS
index 869e882..6a81f74 100644
--- a/THANKS
+++ b/THANKS
@@ -313,6 +313,7 @@ Paul Martinolich            [email protected]
 Paul Pogonyshev             ?
 Paul Townsend               ?
 Pavel Roskin                [email protected]
+Pádraig Brady               [email protected]
 Per Øyvind Karlsen          [email protected]
 Peter Breitenlohner         [email protected]
 Peter Eisentraut            [email protected]
diff --git a/doc/autoconf.texi b/doc/autoconf.texi
index 0640320..b957083 100644
--- a/doc/autoconf.texi
+++ b/doc/autoconf.texi
@@ -15033,12 +15033,12 @@ escape, while @samp{: `cd /zorglub 2>/dev/null`} works properly.
 On the other hand, some shells, such as Solaris or FreeBSD
 @command{/bin/sh}, warn about missing programs before performing
 redirections.  Therefore, to silently check whether a program exists, it
-is necessary to perform redirections on a subshell:
-
+is necessary to perform redirections on a subshell or brace group:
 @example
 $ @kbd{/bin/sh -c 'nosuch 2>/dev/null'}
 nosuch: not found
 $ @kbd{/bin/sh -c '(nosuch) 2>/dev/null'}
+$ @kbd{/bin/sh -c '@{ nosuch; @} 2>/dev/null'}
 $ @kbd{bash -c 'nosuch 2>/dev/null'}
 @end example
 
@@ -19032,13 +19032,16 @@ $ @kbd{nl='}
 moonlight
 @end example
 
-Not all versions of @command{tr} recognize ranges of characters: at
+Not all versions of @command{tr} recognize direct 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.
+use @command{/usr/xpg4/bin/tr} instead, or add brackets (which in Posix
+transliterate to themselves).
 
 @example
 $ @kbd{echo "Hazy Fantazy" | LC_ALL=C /usr/bin/tr a-z A-Z}
 HAZy FAntAZy
+$ @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
 @end example


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