[PATCH] doc: improve AS_VAR_IF details

[Eric Blake]

* doc/autoconf.texi (Polymorphic Variables) <AS_VAR_IF>: Make it
clear that user must supply quotes as needed.
* THANKS: Update.
Suggested by Randall Cotton.

Signed-off-by: Eric Blake <address@hidden>
---

Thanks for your suggested wording.  This actually implements it.

 ChangeLog         |    8 ++++++++
 doc/autoconf.texi |    7 ++++---
 2 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index fbc69db..2ce085b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2010-08-17  Eric Blake  <address@hidden>
+
+       doc: improve AS_VAR_IF details
+       * doc/autoconf.texi (Polymorphic Variables) <AS_VAR_IF>: Make it
+       clear that user must supply quotes as needed.
+       * THANKS: Update.
+       Suggested by Randall Cotton.
+
 2010-08-16  Ralf Wildenhues  <address@hidden>

        Fix Autotest --errexit to exit after XPASSing tests.
diff --git a/doc/autoconf.texi b/doc/autoconf.texi
index 05705f2..9d29b9c 100644
--- a/doc/autoconf.texi
+++ b/doc/autoconf.texi
@@ -13491,12 +13491,13 @@ Polymorphic Variables
 @comment AS_VAR_GET is intentionally undocumented; it can't handle
 @comment trailing newlines uniformly, and forks too much.

address@hidden AS_VAR_IF (@var{var}, @ovar{value}, @ovar{if-equal}, @
address@hidden AS_VAR_IF (@var{var}, @ovar{word}, @ovar{if-equal}, @
   @ovar{if-not-equal})
 @asindex{VAR_IF}
 Output a shell conditional statement.  If the contents of the
-polymorphic shell variable @var{var} match the string @var{value},
-execute @var{if-equal}; otherwise execute @var{if-not-equal}.  Avoids
+polymorphic shell variable @var{var} match the string @var{word},
+execute @var{if-equal}; otherwise execute @var{if-not-equal}.  @var{word}
+must be a single shell word (typically a quoted string).  Avoids
 shell bugs if an interrupt signal arrives while a command substitution
 in @var{var} is being expanded.
 @end defmac
-- 
1.7.2.1