commit 2752e5bedb26fa0c7291f810f9f534b688b2f1d2
author Markus Armbruster <armbru@redhat.com> Mon Sep 07 17:45:55 2015 +0200
committer Peter Maydell <peter.maydell@linaro.org> Mon Sep 14 18:02:59 2015 +0100
tree e11d60006ff12ec471d11ff132f227a73fb4b41e
parent a2aa09e18186801931763fbd40a751fa39971b18

qapi: Fix cgen() for Python older than 2.7

A feature new in Python 2.7 crept into commit 77e703b: re.subn()'s
fifth argument.  Avoid that, use re.compile().

Reported-by: Laurent Desnogues <laurent.desnogues@gmail.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Tested-by: Laurent Desnogues <laurent.desnogues@gmail.com>
Message-id: 1441640755-23902-1-git-send-email-armbru@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

scripts/qapi.py

diff --git a/scripts/qapi.py b/scripts/qapi.py
index 817d824..88fa073 100644
--- a/scripts/qapi.py
+++ b/scripts/qapi.py
@@ -944,7 +944,9 @@
     raw = code % kwds
     if indent_level:
         indent = genindent(indent_level)
-        raw = re.subn("^.", indent + r'\g<0>', raw, 0, re.MULTILINE)
+        # re.subn() lacks flags support before Python 2.7, use re.compile()
+        raw = re.subn(re.compile("^.", re.MULTILINE),
+                      indent + r'\g<0>', raw)
         raw = raw[0]
     return re.sub(re.escape(eatspace) + ' *', '', raw)