[SCM] GNU Autoconf source repository branch, master, updated. v2.63-142-g7181511

[Paolo Bonzini]

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- Log -----------------------------------------------------------------
commit 718151138d1b779a1e690eaeb2acc6216a97c89c
Author: Paolo Bonzini <address@hidden>
Date:   Thu Oct 30 15:19:49 2008 +0100

    Do not check for $LINENO in generated scripts.
    
    * lib/m4sugar/m4sh.m4 (_AS_PREPARE): Do not call _AS_LINENO_PREPARE,
    and explain why.

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

Summary of changes:
 ChangeLog           |    6 ++++++
 lib/m4sugar/m4sh.m4 |    5 ++++-
 2 files changed, 10 insertions(+), 1 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index a9556b8..926053d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2008-10-30  Paolo Bonzini  <address@hidden>
+
+       Do not check for $LINENO in generated scripts.
+       * lib/m4sugar/m4sh.m4 (_AS_PREPARE): Do not call _AS_LINENO_PREPARE,
+       and explain why.
+
 2008-10-30  Eric Blake  <address@hidden>
 
        Don't check for non-POSIX extensions in suggested tests.
diff --git a/lib/m4sugar/m4sh.m4 b/lib/m4sugar/m4sh.m4
index 52b21ac..1a61729 100644
--- a/lib/m4sugar/m4sh.m4
+++ b/lib/m4sugar/m4sh.m4
@@ -292,6 +292,10 @@ _m4_popdef([AS_EXIT])])# _AS_DETECT_BETTER_SHELL
 # important not to forget some: config.status needs them.
 # List any preparations that create shell functions first, then
 # topologically sort the others by their dependencies.
+#
+# Special case: we do not need _AS_LINENO_PREPARE, because the
+# parent will have substituted $LINENO for us when processing its
+# own invocation of _AS_LINENO_PREPARE.
 m4_defun([_AS_PREPARE],
 [m4_pushdef([AS_REQUIRE])]dnl
 [m4_pushdef([AS_REQUIRE_SHELL_FN], _m4_defn([_AS_REQUIRE_SHELL_FN])
@@ -305,7 +309,6 @@ _AS_BASENAME_PREPARE
 _AS_DIRNAME_PREPARE
 _AS_ME_PREPARE
 _AS_CR_PREPARE
-_AS_LINENO_PREPARE
 _AS_ECHO_N_PREPARE
 _AS_LN_S_PREPARE
 _AS_MKDIR_P_PREPARE


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