I've now diagnosed this problem and (unless there are some stringent rules on the contents of .aff files which I've been unable to find) the problem lies in hunspell and not in myspell-en-gb. It's just that the extra complexity of myspell-en-gb tickles the bug in hunspell.
An example of a rule which hunspell fails to process correctly is: SFX D 0 ed [aeio][aeiou][bcdfgkmnprstvz] And a suitable word for demonstrating the problem is "entertained". The actual processing happens in the SfxEntry::test_condition method in the affentry.cxx compilation unit. It tries to work backwards through the proposed stem ("entertain") and at the same time backwards through the above comparison rule. When it finds the 'n' (the last letter of "entertain") in the third group it sets a flag (called ingroup) and decrements its pointer into the target word so that pointer is now pointing at the 'i' of "entertain". However it then carries on working its way through the characters of the third group. Fortunately there is no 'i' there to find so the bug does no harm. The code then moves on to the second group of characters, and works backwards through it until it finds the 'i', which matches the letter currently being pointed at in the target word. It sets the flag again and again decrements the pointer into the target word so now it points at the 'a' in "entertain". This time the bug bites. Because the code goes on processing the remaining characters in the second group it then finds the 'a' there, which causes the pointer into the target word to be decremented again - now it points to the latter 't' in "entertain" and so when the code comes to process the first group of characters it can't get a match (it wants to find 'a', but that's been and gone). As a quick demonstration that this explanation is correct, you can edit the en_GB.aff file and reverse the middle group of the rule so that it reads: SFX D 0 ed [aeio][uoiea][bcdfgkmnprstvz] Hunspell then successfully recognises "entertained" as being a word. Can this bug be reassigned to the hunspell source package? -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]