Change of behaviour in history-search-backward ?

[Ollivier Robert <roberto@xxxxxxxxxxxxxx>]

In 3.1.5 (the only old version I have here), "history-search-backward" was
looking for the largest pattern but it has changed in 3.1.6 (I don't know
when) and now, it is only looking for the first word.

More details:

Giving the following history:

  389  mutt -f +lists/zsh-workers
  390  mutt -f +sent
  391  trn
  392  trn fr.comp.securite
  393  vi PKN
  394  cd src/perl
  395  ll
  396  gen-ncm PKN
  397  echo $ZSH_VERSION
  398  history|more
  399  mutt

In 3.1.5, doing

mutt -f<ESC>p

gives me

mutt -f +sent

In 3.1.6, it gives me 

mutt

Why was that changed and could we go back to the old and expected behaviour?

autocd
cdablevars
completeinword
extendedglob
extendedhistory
histignoredups
histnostore
nohup
ignoreeof
interactive
monitor
numericglobsort
pathdirs
pushdignoredups
recexact
shinstdin
zle

-- 
Ollivier ROBERT -=- Eurocontrol EEC/TEC -=- roberto@xxxxxxxxxxxxxx
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