#88 Make smartIndent more flexible

open
nobody
Program (79)
5
2003-07-30
2003-07-30
Thomas Pohl
No

Hiho,
with this simple patch (hack?) it is now possible to
implement more complex smartIndent macros. The reason
is that the return value for a smartIndent macro can
now also be -2 which tells nedit to ommit the newline
after indentation.

Here is a simple smartIndent macro that copies the
indentation of the previous line conserving any
combinations of tabs and spaces (I have been looking
forward to this feature for years now :-) ):
---------------------------------------------------------
define copyPreviousLineIndentation {
lineStart = startOfLine($1)
search("^[ \t]*", lineStart, "regex")
insert_string("\n" get_range(lineStart, $search_end))
}
---------------------------------------------------------

The newline macro then looks like this:
---------------------------------------------------------
copyPreviousLineIndentation($1)
return -2
---------------------------------------------------------

Without this patch it isn't possible to get this
functionality because nedit would append a newline
after the indentation string.

Cheers,
Tom

Discussion

  • Thomas Pohl

    Thomas Pohl - 2003-07-30
     
    Attachments
  • Joerg Fischer

    Joerg Fischer - 2003-12-28

    Logged In: YES
    user_id=918104

    > Without this patch it isn't possible to get this
    > functionality because nedit would append a newline
    > after the indentation string.

    Well, it is possible, although it may not be obvious.
    For your language mode bind the *Return* key to
    define copyPreviousLineIndentation {
    pos = search("^\\s*", $cursor, "regex", "backward")
    insert_string("\n" get_range(pos, $search_end))
    }
    This is just the function you defined above.
    Now, you'd like to have an automagic newline. For
    this turn Wrap to *None* (Yes, this is important).
    You have smart indent on. Your Newline macro will
    only be return -1 and only called with Ctrl+Return -
    recall that we've bound Return to the macro above
    via a menu definition and turned wrapping to none!
    As *Type-in* Macro we define:

    if ($column >= $wrap_margin) {
    f = search("\\s", $cursor-1, "regex", "backward")
    if (f != -1) {
    right = search("$", $cursor, "regex", "nowrap")
    back = length(get_range($cursor,right))
    c = get_range(f+1, right)
    pos = search("^\\s*",$cursor,"regex","backward")
    set_cursor_pos(f+1)
    delete_to_end_of_line()
    insert_string("\n" get_range(pos,$search_end) c)
    set_cursor_pos($cursor - back)
    }
    }

    Hence if you write over the margin, you'll get
    your automatic newline respecting the spaces/tabs
    thing w/o using the Newline Macro.

     

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No, thanks