git: bb727917364f - stable/12 - freebsd-update: re-edit files if merge conflict markers remain

The branch stable/12 has been updated by emaste:

URL: https://cgit.FreeBSD.org/src/commit/?id=bb727917364f7ded1d24f599389288c63b23d862

commit bb727917364f7ded1d24f599389288c63b23d862
Author:     Ed Maste <emaste@FreeBSD.org>
AuthorDate: 2022-12-14 17:34:59 +0000
Commit:     Ed Maste <emaste@FreeBSD.org>
CommitDate: 2023-06-21 12:58:01 +0000

    freebsd-update: re-edit files if merge conflict markers remain
    
    freebsd-update will open ${EDITOR} if conflicts occur while merging
    updates to config files.  Inform the user if they've left conflict
    markers behind, and go back to editing the file.
    
    PR:             185546
    PR:             229689
    Reviewed by:    delphij
    Approved by:    re (cperciva, expedited MFC)
    Sponsored by:   The FreeBSD Foundation
    Differential Revision:  https://reviews.freebsd.org/D37703
    
    (cherry picked from commit ceb5f28ba5fcfa69de7410d2327d4a5abf2a421f)
    (cherry picked from commit c7e3703352037a5afacdc4126725f351fe7da72b)
    (cherry picked from commit e27ded83c76a609687a3d9e82b80fe7e1b782bf6)
    (cherry picked from commit b562307b70346030f59fe6a05d125814c74da47b)
---
 usr.sbin/freebsd-update/freebsd-update.sh | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/usr.sbin/freebsd-update/freebsd-update.sh b/usr.sbin/freebsd-update/freebsd-update.sh
index cad1b9d617fd..56a7ac422cd9 100644
--- a/usr.sbin/freebsd-update/freebsd-update.sh
+++ b/usr.sbin/freebsd-update/freebsd-update.sh
@@ -2543,8 +2543,21 @@ The following file could not be merged automatically: ${F}
 Press Enter to edit this file in ${EDITOR} and resolve the conflicts
 manually...
 			EOF
-			read dummy </dev/tty
-			${EDITOR} `pwd`/merge/new/${F} < /dev/tty
+			while true; do
+				read dummy </dev/tty
+				${EDITOR} `pwd`/merge/new/${F} < /dev/tty
+
+				if ! grep -qE '^(<<<<<<<|=======|>>>>>>>)([[:space:]].*)?$' $(pwd)/merge/new/${F} ; then
+					break
+				fi
+				cat <<-EOF
+
+Merge conflict markers remain in: ${F}
+These must be resolved for the system to be functional.
+
+Press Enter to return to editing this file.
+				EOF
+			done
 		done < failed.merges
 		rm failed.merges