From fd16c60f862fcaade0b32fd0c4c26e5deb39a3c5 Mon Sep 17 00:00:00 2001
From: John Cupitt <jcupitt@gmail.com>
Date: Sun, 11 Jan 2015 09:48:38 +0000
Subject: [PATCH] try to make vipsthumbnail manpage clearer

see

https://github.com/jcupitt/libvips/issues/216
---
 man/vipsthumbnail.1 | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/man/vipsthumbnail.1 b/man/vipsthumbnail.1
index 10be8956..d589ad0b 100644
--- a/man/vipsthumbnail.1
+++ b/man/vipsthumbnail.1
@@ -50,7 +50,13 @@ Set the output format string. The input filename has any file type suffix
 removed, then that value is substitued into 
 .B FORMAT
 replacing
-.B %s.
+.B %s. If 
+.B FORMAT
+is a relative path, the name of the input directory is prepended. In other
+words, any path in
+.B FORMAT
+is relative to the directory of the current input file.
+
 The default value is
 .B tn_%s.jpg
 meaning JPEG output, with