[SCM] GNU Autoconf source repository branch, master, updated. v2.63-218-g7811a6d

[Eric Blake]

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- Log -----------------------------------------------------------------
commit 7811a6d5a908c215fcb838c19667c5c7daf0009f
Author: Eric Blake <address@hidden>
Date:   Thu Nov 20 21:02:22 2008 -0700

    Handle version numbers as decimal, even if they start with 0.
    
    * lib/m4sugar/m4sugar.m4 (_m4_version_unletter): Avoid
    interpreting leading zeros as octal.
    
    Signed-off-by: Eric Blake <address@hidden>

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

Summary of changes:
 ChangeLog              |    6 ++++++
 lib/m4sugar/m4sugar.m4 |   13 +++++++------
 tests/m4sugar.at       |    4 ++++
 3 files changed, 17 insertions(+), 6 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index b14c98d..24b8091 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,11 @@
 2008-11-20  Eric Blake  <address@hidden>
 
+       Handle version numbers as decimal, even if they start with 0.
+       * lib/m4sugar/m4sugar.m4 (_m4_version_unletter): Avoid
+       interpreting leading zeros as octal.
+
+2008-11-20  Eric Blake  <address@hidden>
+
        Speed up AT_CHECK.
        * lib/autotest/general.m4 (AT_CHECK, AT_CHECK_UNQUOTED): Expand
        third and fourth arguments once.
diff --git a/lib/m4sugar/m4sugar.m4 b/lib/m4sugar/m4sugar.m4
index 4657995..fd443ca 100644
--- a/lib/m4sugar/m4sugar.m4
+++ b/lib/m4sugar/m4sugar.m4
@@ -2589,9 +2589,10 @@ m4_define([m4_sign],
 #   Nl -> (N+1).-1.(l#)
 #
 # for example:
-#   [2.14a] -> [2,14+1,-1,[0r36:a]] -> 2.15.-1.10
-#   [2.14b] -> [2,15+1,-1,[0r36:b]] -> 2.15.-1.11
-#   [2.61aa.b] -> [2.61,1,-1,[0r36:aa],+1,-1,[0r36:b]] -> 2.62.-1.370.1.-1.11
+#   [2.14a] -> [0,2,14+1,-1,[0r36:a]] -> 2.15.-1.10
+#   [2.14b] -> [0,2,15+1,-1,[0r36:b]] -> 2.15.-1.11
+#   [2.61aa.b] -> [0,2.61,1,-1,[0r36:aa],+1,-1,[0r36:b]] -> 2.62.-1.370.1.-1.11
+#   [08] -> [0,[0r10:0]8] -> 8
 #
 # This macro expects reasonable version numbers, but can handle double
 # letters and does not expand any macros.  Original version strings can
@@ -2602,11 +2603,11 @@ m4_define([m4_sign],
 # but since [0r36:a] and commas are less readable than 10 and dots, we
 # provide a wrapper for human use.
 m4_define([m4_version_unletter],
-[m4_substr(m4_map_args([.m4_eval], m4_unquote(_$0([$1]))), [1])])
+[m4_substr(m4_map_args([.m4_eval], m4_unquote(_$0([$1]))), [3])])
 m4_define([_m4_version_unletter],
-[m4_bpatsubst(m4_translit([[[$1]]], [.-], [,,]),]dnl
+[m4_bpatsubst(m4_bpatsubst(m4_translit([[[[0,$1]]]], [.-], [,,]),]dnl
 m4_dquote(m4_dquote(m4_defn([m4_cr_Letters])))[[+],
-             [+1,-1,[0r36:\&]])])
+             [+1,-1,[0r36:\&]]), [,0], [,[0r10:0]])])
 
 
 # m4_version_compare(VERSION-1, VERSION-2)
diff --git a/tests/m4sugar.at b/tests/m4sugar.at
index e3387f6..4bdc06c 100644
--- a/tests/m4sugar.at
+++ b/tests/m4sugar.at
@@ -809,6 +809,8 @@ m4_version_compare([1.1a], [1.1A])
 m4_version_compare([1z], [1aa])
 m4_version_compare([2.61a], [2.61a-248-dc51])
 m4_version_compare([2.61b], [2.61a-248-dc51])
+m4_version_compare([08], [09])
+m4_version_compare([010], [8])
 dnl Test that side effects to m4_list_cmp occur exactly once
 m4_list_cmp([[0], [0], [0]m4_errprintn([hi])],
             [[0], [0], [0]m4_errprintn([hi])])
@@ -829,6 +831,8 @@ m4_list_cmp([[0], [0], [0]m4_errprintn([hi])],
 -1
 -1
 1
+-1
+1
 0
 0
 ]], [[hi


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