tiny py stuff

TODO

@@ -3,50 +3,12 @@
 	$ vips avg broken.jpg[fail]
 
   about 50% of the time it'll trigger a range of out-of-order reads and lock
-  for 10s or so while seq waits
-
-- try:
-
-	#!/usr/bin/python
-
-	import sys
-
-	import gi
-	gi.require_version('Vips', '8.0')
-	from gi.repository import Vips
-
-	try:
-	    im = Vips.Image.new_from_file(sys.argv[1])
-	    im.avg()
-	except Vips.Error as e:
-	    print 'saw an error <<%s>>' % e.message
-	    print 'vips error buffer start:'
-	    print Vips.error_buffer()
-	    print 'vips error buffer stop'
-
-  see:
-
-	$ ./read.py broken.jpg[fail]
-	vips warning: linecache: error in tile 0 x 192
-	vips warning: linecache: error in tile 0 x 200
-	saw an error <<Error calling operator avg.>>
-	vips error buffer start:
-
-	vips error buffer stop
-
-  error msg is lost
+  for 10s or so while seq times out
 
 - add more webp tests to py suite
 
 - try moving some more of the CLI tests to py
 
-- the gif tests in the suite sometimes fail with giflib5 because of an
-  uninitialized struct in giflib, see
-
-	https://sourceforge.net/p/giflib/bugs/94/
-
-  sadly ubuntu 16.04 only comes with giflib5, and giflib5 is currently broken
-
 - I like the new int mask creator in reducev, can we use it in im_vips2imask()
   as well?
 
@@ -56,8 +18,6 @@
 
 - could load pdf thumbnails?
 
-- still not happy about float->int mask conversion in im_vips2mask.c
-
 - colour needs to split _build() into preprocess / process / postprocess
   phases
 

python/packages/gi/overrides/Vips.py

@@ -176,7 +176,7 @@ class Error(Exception):
     """
     def __init__(self, message, detail = None):
         self.message = message
-        if detail == None:
+        if detail == None or detail == "":
             detail = Vips.error_buffer()
             Vips.error_clear()
         self.detail = detail