[PATCH v3 8/8] man: clarify folder: prefix regarding duplicate files

[Jani Nikula]

The results for folder: prefix are a source of recurring confusion.
---
 man/man7/notmuch-search-terms.7 |    8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/man/man7/notmuch-search-terms.7 b/man/man7/notmuch-search-terms.7
index 314efa8..b5eb195 100644
--- a/man/man7/notmuch-search-terms.7
+++ b/man/man7/notmuch-search-terms.7
@@ -102,9 +102,11 @@ thread ID values can be seen in the first column of output from
 The
 .B folder:
 prefix can be used to search for email message files that are
-contained within particular directories within the mail store. Only
-the directory components below the top-level mail database path are
-available to be searched.
+contained within particular directories within the mail store. If the
+same email message has multiple message files associated with it, it's
+sufficient for a match that at least one of the files is contained
+within a matching directory. Only the directory components below the
+top-level mail database path are available to be searched.
 
 The
 .B date:
-- 
1.7.10.4