# HG changeset patch
# User Timo Sirainen <timo.sirainen@dovecot.fi>
# Date 1489682788 -7200
# Node ID 5a5e046c42ec3f1e38201ef8d5fa777a4f8061a3
# Parent  4a203e1b63897c76cee71e728e9da9607992ba73
lib-storage: Don't reset \Recent flags when rebuilding index

The recent flags are tracked with first_recent_uid in the header. If the
first_recent_uid is valid in the old index, preserve it. This way all
mails don't show as having \Recent flag.

This was used by sdbox and mdbox code.

diff -r 4a203e1b6389 -r 5a5e046c42ec src/lib-storage/index/index-rebuild.c
--- a/src/lib-storage/index/index-rebuild.c	Thu Mar 16 09:38:59 2017 +0200
+++ b/src/lib-storage/index/index-rebuild.c	Thu Mar 16 18:46:28 2017 +0200
@@ -98,7 +98,7 @@
 	struct mail_index *index = mail_index_view_get_index(ctx->view);
 	struct mail_index_modseq_header modseq_hdr;
 	struct mail_index_view *trans_view;
-	uint32_t uid_validity, next_uid;
+	uint32_t uid_validity, next_uid, first_recent_uid;
 	uint64_t modseq;
 
 	hdr = mail_index_get_header(ctx->view);
@@ -131,6 +131,17 @@
 			&next_uid, sizeof(next_uid), FALSE);
 	}
 
+	/* set first_recent_uid */
+	first_recent_uid = hdr->first_recent_uid;
+	if (backup_hdr != NULL &&
+	    backup_hdr->first_recent_uid > first_recent_uid &&
+	    backup_hdr->first_recent_uid <= next_uid)
+		first_recent_uid = backup_hdr->first_recent_uid;
+	first_recent_uid = I_MIN(first_recent_uid, next_uid);
+	mail_index_update_header(ctx->trans,
+		offsetof(struct mail_index_header, first_recent_uid),
+		&first_recent_uid, sizeof(first_recent_uid), FALSE);
+
 	/* set highest-modseq */
 	i_zero(&modseq_hdr);
 	modseq_hdr.highest_modseq = mail_index_modseq_get_highest(ctx->view);