[PATCH] inject: Anchor 'From mboxrd@z ...' search

[Kyle Meyer <kyle@kyleam.com>]

piem--write-mbox-to-maildir finds the bounds for each message by doing
a plain search for "From mboxrd@z", but of course nothing prevents
that from being within the text of the message.  Anchor it to the
start of the line to prevent false positives.
---

  This embarrassing gem was found when trying to inject
  <dde16a7a7a212e0947fdf3afad5678bac7ad2690.1610964014.git.public@yoctocell.xyz>.

 piem.el | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/piem.el b/piem.el
index 8c23e7b..867a7e5 100644
--- a/piem.el
+++ b/piem.el
@@ -489,9 +489,9 @@ (defun piem--write-mbox-to-maildir ()
   (let ((n-added 0)
         (n-skipped 0))
     (while (and (not (eobp))
-                (search-forward "From mboxrd@z" nil t))
+                (re-search-forward "^From mboxrd@z" nil t))
       (let* ((beg (line-beginning-position 2))
-             (end (or (and (search-forward "From mboxrd@z" nil t)
+             (end (or (and (re-search-forward "^From mboxrd@z" nil t)
                            (progn (goto-char (line-beginning-position 0))
                                   (point-marker)))
                       (point-max-marker)))

base-commit: 9abfc09d24e73044f2392f45fc41169ee4afd72f
-- 
2.29.2