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-rw-r--r--doc/HISTORY5
1 files changed, 5 insertions, 0 deletions
diff --git a/doc/HISTORY b/doc/HISTORY
index a68dab03..36bd9269 100644
--- a/doc/HISTORY
+++ b/doc/HISTORY
@@ -6,6 +6,11 @@ CHANGE HISTORY
 
 not yet  BJH  Release 10.92.00
 
+              pnmnorm: With bounds specified as -bpercent or -bsingle and
+              -wpercent or -wsingle, and the image has only one brightness,
+              don't attempt any normalization - leave image as is.  (Previous
+              version produce all black with -keephues).
+
               pnmnorm: Fix bug: output too dark when -bpercent and -wpercent
               indicate overlapping values.  Broken since Netpbm 10.43 (June
               2008).