at-compat.at: Add patch to fix option parsing bug.

[dxcommon.git] / snippet / at-compat.at

diff --git a/snippet/at-compat.at b/snippet/at-compat.at
index 5e111b4269250e933c651b3777f4269bd4213985..6eb6d97042a6dcd5f4d5bbbeda055c206fc4550a 100644 (file)
--- a/snippet/at-compat.at
+++ b/snippet/at-compat.at
@@ -1,20 +1,35 @@
 # Copyright © 2023 Nick Bowler
 #
-# Compatibility helper for Autotest test suites.  This should be included
-# before expanding AT_INIT
+# Autotest monkey patches to fix some issues.  This should be included before
+# expanding AT_INIT.
 #
 # License WTFPL2: Do What The Fuck You Want To Public License, version 2.
 # This is free software: you are free to do what the fuck you want to.
 # There is NO WARRANTY, to the extent permitted by law.
 
-# Redefine AT_INIT to work around nonportable constructs in current
-# (as of 2023) Autoconf releases:
+# In a shell function, redirections on : are not correctly handled by some
+# shells, including Solaris 10 /bin/sh.  Work around the problem using 'eval'.
+# See the following Autoconf patch description for further details:
 #
-#   - In a shell function, redirections on : are not correctly handled
-#     by Solaris /bin/sh.  See the following Autoconf patch for details:
+#   https://lists.gnu.org/archive/html/autoconf-patches/2021-03/msg00000.html
+m4_define([AT_INIT],
+  m4_bpatsubst(m4_dquote(m4_defn([AT_INIT])),
+    [^\( *\)\(: >"\$at_stdout".*$\)], [\1eval '\2']))
+
+# Parsing of command-line options with arguments is busted in the two-argument
+# form if the option name contains a hyphen.  Apply a fix for this bug.  See
+# the following Autoconf patch description for further details:
 #
-#       https://lists.gnu.org/archive/html/autoconf-patches/2021-03/msg00000.html
+#   https://lists.gnu.org/archive/html/autoconf-patches/2020-02/msg00000.html
+m4_define([_AT_ARG_OPTION],
+  m4_bpatsubst(m4_dquote(m4_defn([_AT_ARG_OPTION])),
+    [at_prev=--AT_first_option_tr], [at_prev=--AT_first_option]))
 
+# The computation of the elapsed time can crash the testsuite on DJGPP because
+# in this environment date +%s can return a string that starts with a 0, which
+# bash interprets as octal digits in arithmetic expansions.  With a working
+# GNU-like date +%s the output should never start with a 0 so just reject
+# anything that does.
 m4_define([AT_INIT],
   m4_bpatsubst(m4_dquote(m4_defn([AT_INIT])),
-    [^\( *\)\(: >"\$at_stdout".*$\)], [\1eval '\2']))
+    [\[0-9]\*,\[0-9]\*], [[1-9][0-9]*,[1-9][0-9]*]))