line-numbers mixin
Specifically, when both are turned on, the #lang line now shows
the line number and shifts the "#lang ..." over to the same spot
where it is drawn when the first line is natually visible
Also, rackety
pixel of space in between lines in DrRacket.
This change is based on Matthew's experience having a look
at the font setup on the three platforms.
He writes:
> * Mac OS X: the convention seems to be to add space between lines.
> TextEdit, for example, looks like DrRacket: the maze has spaces.
>
> (I can't find a font that makes the maze look right, actually, even
> if I adjust the line spacing.)
>
> * Windows: the convention seems to be that space is built into the
> font. DrRacket (and SirMail) draw lines more sparsely than Notepad.
>
> Perhaps consistent with the differing conventions, the height of
> "Courier New" at 11-pixel size is 14 on Windows, 13 on Mac OS X.
>
> * Unix: the convention seems to be to add space. DrRacket looks like
> the default Terminal and Text Editor programs on Ubuntu.
>
> The maze nevertheless looks right everywhere, because the glyphs
> extend an extra pixel above the declared bounding box!
Before this commit, opening collects/drracket/private/unit.rkt required
about 17.5 megabytes of memory and after this commit, it is down to
about 15 megabytes.
The precise measurement I did was to create a frame and a scheme:text%
object in it, record the result of current-memory-use, open the file,
and record current-memory-use again.
For comparison, using a text:standard-style-list% object instead of
the scheme:text% requires only about 4.1 megabytes. One difference
being that there are about 3x more snips (10,204 vs 33,901 (after the
commit)), since we have one snip for each region that has a different
color in the scheme:text version, and the text:standard-style-list has
no colors and thus about two per line (there are 5006 lines in the
file).
double clicking inside a string) and when clicking on close
parentheses (specifically, only special case close parens that are
actually parentheses according to the colorer, rather than special
casing all close parens).
before the plain text-mode keymap.
Add a doubleleftclick binding to the scheme mode keymap so that
we can have sexp-sensitive double clicking in the drracket editor
and the magic fixup of opening parentheses.
This commit moves the automatic insertion of matching parens to the
scheme mode keymap, so it will now take affect in Racket mode editing,
only. Also, Rackety.
set the keyboard focus to the replace editor.
It used to be disabled when the searching bar is hidden. In that case, it now
makes the searching bar visible.
For example, autocomplete of `cur-dir' will produce the same list of results as the documentation search, with `current-directory' first, instead of producing no results.
