Wed, 15 Aug 2001 17:33:02 +0100, Simon Marlow pisze:

It's hard to do, unless you adopt a policy such as ending the current input with ';', which doesn't seem terribly attractive. The right way to do it is for the parser to be incremental and interact with readline, but I can't see an easy way to do that.

And it's not clear when a multi-line expression ends, e.g. case foo of 1 -> xxx 2 -> yyy 3 -> zzz Python uses the convention that an empty line entered interactively ends a multiline statement. Its syntax is different from Haskell in that it can be determined when a statement is multiline from the first line, and that it's not possible to write certain statements in a single line - so for Python it's more important to be able to enter multiline statements. What is a pain in Python: repeating a whole multiline statement (because, say, of an error in the middle made previously) requires bringing each line from history separately. Some Unix shells are different and bring the whole multiline statement from the history, providing a substitute of a full-screen editor, with the main surprises being that Enter executes the statement and up/down arrows typically don't work either. In zsh pressing End at the end of a line, or Home at the beginning, allows to go up and down through lines, and Alt-Enter or Ctrl-V Ctrl-J allow to insert a newline character. -- __("< Marcin Kowalczyk * qrczak@knm.org.pl http://qrczak.ids.net.pl/ \__/ ^^ SYGNATURA ZASTÊPCZA QRCZAK