Artificial argv limits.

when i skimmed the code earlier, i was looking at all the uses of
MAXARGS -- many of which are used to size local arrays.  converting
them all to be dynamically-sized might be a fair amount of work.

but looking at rmm.c, refile.c, and folder_delmsgs(), i don't think
that issue applies.  the patch below fixes the problem, and makes
rmmproc and refile do the right thing (well, at least, the modern
thing).  NB: i didn't test to the limit where execvp should return
E2BIG.

as for the rest of mh -- it's certainly possible to hit the MAXARGS
limit with other commands (show, for instance), but i suspect the
frequency is much lower, and those, too, can be fixed as needed.

paul

>From 9636bc0e1697829966f51d2c301cd5d730c38c0a Mon Sep 17 00:00:00 2001
From: Paul Fox <pgf@foxharp.boston.ma.us>
Date: Mon, 26 Nov 2012 20:49:55 -0500
Subject: [PATCH] rmm/refile: remove the MAXARGS limit when running rmmproc

diff --git a/sbr/folder_delmsgs.c b/sbr/folder_delmsgs.c
index 6bde76f..c1416a6 100644 (file)
--- a/sbr/folder_delmsgs.c
+++ b/sbr/folder_delmsgs.c
@@ -40,9 +40,6 @@ folder_delmsgs (struct msgs *mp, int unlink_msgs, int nohook)
        /* Mark that the sequence information has changed */
        mp->msgflags |= SEQMOD;
 
-       if (mp->numsel > MAXARGS - 2)
-           adios (NULL, "more than %d messages for %s exec", MAXARGS - 2,
-                  rmmproc);
        vec = (char **) calloc ((size_t) (mp->numsel + 2), sizeof(*vec));
        if (vec == NULL)
            adios (NULL, "unable to allocate exec vector");