patchbomb: fix parsing of multiple addresses, allow multiple addrs in --to/cc/bcc

Instead of using custom code to split apart addresses, we now use
mail.parseaddrlist() which always does the Right Thing as it relies on Python's
email.Utils.getaddresses().

Previously, 'hg email --to=foo,bar' only respected foo and discarded bar. Also,
commas in names were not allowed in hgrc or the interactive prompt; specifying
'"Lastname, Firstname" <foo>' would confuse patchbomb.

The testcase uses '-m tmp.mbox' because -n (like in other tests) would disable
address mangling.

hgext/patchbomb.py

@@ -379,20 +379,21 @@ def patchbomb(ui, repo, *revs, **opts):
     else:
         msgs = getpatchmsgs(list(getpatches(revs)))
 
-    def getaddrs(opt, prpt, default = None):
-        addrs = opts.get(opt) or (ui.config('email', opt) or
-                                  ui.config('patchbomb', opt) or
-                                  prompt(ui, prpt, default)).split(',')
-        return [mail.addressencode(ui, a.strip(), _charsets, opts.get('test'))
-                for a in addrs if a.strip()]
+    def getaddrs(opt, prpt=None, default=None):
+        if opts.get(opt):
+            return mail.addrlistencode(ui, opts.get(opt), _charsets,
+                                       opts.get('test'))
+
+        addrs = (ui.config('email', opt) or
+                 ui.config('patchbomb', opt) or '')
+        if not addrs and prpt:
+            addrs = prompt(ui, prpt, default)
+
+        return mail.addrlistencode(ui, [addrs], _charsets, opts.get('test'))
 
     to = getaddrs('to', 'To')
     cc = getaddrs('cc', 'Cc', '')
-
-    bcc = opts.get('bcc') or (ui.config('email', 'bcc') or
-                          ui.config('patchbomb', 'bcc') or '').split(',')
-    bcc = [mail.addressencode(ui, a.strip(), _charsets, opts.get('test'))
-           for a in bcc if a.strip()]
+    bcc = getaddrs('bcc')
 
     ui.write('\n')
 

tests/test-patchbomb

@@ -169,6 +169,12 @@ echo "% test multiple flags for multiple patches"
 hg email --date '1970-1-1 0:1' -n --flag fooFlag --flag barFlag -f quux -t foo \
  -c bar -s test -r 0:1 | fixheaders
 
+echo "% test multi-address parsing"
+hg email --date '1980-1-1 0:1' -m tmp.mbox -f quux -t 'spam<spam><eggs>' \
+ -t toast -c 'foo,bar@example.com' -c '"A, B <>" <a@example.com>' -s test -r 0 \
+ --config email.bcc='"Quux, A." <quux>'
+cat tmp.mbox | fixheaders
+
 echo "% test multi-byte domain parsing"
 UUML=`printf '\374'`
 HGENCODING=iso-8859-1

tests/test-patchbomb.out

@@ -1469,6 +1469,39 @@ diff -r 8580ff50825a -r 97d72e5f12c7 b
 @@ -0,0 +1,1 @@
 +b
 
+% test multi-address parsing
+This patch series consists of 1 patches.
+
+
+Writing [PATCH] test ...
+From quux Tue Jan 01 00:01:01 1980
+Content-Type: text/plain; charset="us-ascii"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [PATCH] test
+X-Mercurial-Node: 8580ff50825a50c8f716709acdf8de0deddcd6ab
+Message-Id: <8580ff50825a50c8f716.315532860@
+User-Agent: Mercurial-patchbomb
+Date: Tue, 01 Jan 1980 00:01:00 +0000
+From: quux
+To: spam <spam>, eggs, toast
+Cc: foo, bar@example.com, "A, B <>" <a@example.com>
+Bcc: "Quux, A." <quux>
+
+# HG changeset patch
+# User test
+# Date 1 0
+# Node ID 8580ff50825a50c8f716709acdf8de0deddcd6ab
+# Parent  0000000000000000000000000000000000000000
+a
+
+diff -r 000000000000 -r 8580ff50825a a
+--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
++++ b/a	Thu Jan 01 00:00:01 1970 +0000
+@@ -0,0 +1,1 @@
++a
+
+
 % test multi-byte domain parsing
 This patch series consists of 1 patches.