Fix bad auto-indent I recently introduced when replacing the regexp that
could cause re to blow up:
if or_any_other_block_opener:
# one indenting comment line
^ cursor ended up at the caret (the bug)
^ but belongs here (the post-patch behavior)
and output windows) so that it if it doesn't succeed with the line
at the cursor, it tries the line before that. This is handy with
tracebacks, where my natural tendency is to click in the displayed
source line rather than in the file/line indicator just above it.
Now I can indulge this tendency.
I factored out a helper and changed the error handling so that a
non-existing file is treated as if the line didn't match -- this is
handy because some function calls (e.g. "foo.bar(1)") match the grep
pattern.
cursor, erase that whitespace first. This avoids a particularly
confusing case where hitting Return at the end of the command didn't
do what it was expected to do -- because it wasn't considered to be at
the end of the command. Now it is.
idle.py:
Load the config files before anything else happens
XXX Need to define standard way to get files relative to the
IDLE install dir
PyShell.py:
ColorDelegator.py:
Get color defns out of IdleConf instead of IdlePrefs
EditorWindow.py:
Replace hard-coded font & window size with config options
Get extension names via IdleConf.getextensions
extend.py:
Obsolete. Extensions defined in config file.
ParenMatch.py:
Use config file for extension options.
Revise comment about parser requirements.
Simplify logic on find returning None.
Changes the one regexp in PyParse capable of making the re module blow the C
stack when passed unreasonable <0.9 wink> program text. Jeremy Hylton
provoked this with a program of the form:
x = (1,
2,
... # 9997 lines deleted here
10000,
)
Programs "like this" will no longer (no matter how many lines they contain)
trigger re death. OTOH, you can now make another class of unreasonable
program that will take much longer to parse.
standard library. Added some comments:
# XXX Note: this is now a standard library module.
# XXX The API needs to undergo changes however; the current code is too
# XXX script-like. This will be addressed later.
of the current module. It also runs the tabnanny to catch any
inconsistent tabs.
Also did a little bit of refactoring: added an errorbox() method to
simplify the display of error dialogs.
(Suggested by Moshe Zadka, but implemented differently.)
Add <<python-docs>> event which, on Unix, brings up Netscape pointing
to http://www.python.doc/current/ (a local copy would be nice but its
location can't be predicted). Windows solution TBD.
"""
If the filename being complained about contains a space, enclose the
file-name in quotes.
The reason is simply that when I try and parse tabnanny's output, filenames
with spaces make it very difficult to determine where the filename stops
and the linenumber begins!
"""
Tim approves.
I slightly changed the patch (use 'in' instead of string.find()) and
arbitrarily bumped the __version__ variable up to 6.
user what they want first if there's unsaved stuff, and may cancel).
It closes more than before.
Add unload_extensions() method to unload all extensions; called from
_close(). It calls an extension's close() method if it has one.
EditorWindow.py:
+ Added get_tabwidth & set_tabwidth "virtual text" methods, that get/set the
widget's view of what a tab means.
+ Moved TK_TABWIDTH_DEFAULT here from AutoIndent.
+ Renamed Mark's get_selection_index to get_selection_indices (sorry, Mark,
but the name was plain wrong <wink>).
FormatParagraph.py: renamed use of get_selection_index.
AutoIndent.py:
+ Moved TK_TABWIDTH_DEFAULT to EditorWindow.
+ Rewrote set_indentation_params to use new VTW get/set_tabwidth methods.
+ Changed smart_backspace_event to delete whitespace back to closest
preceding virtual tab stop or real character (note that this may require
inserting characters if backspacing over a tab!).
+ Nuked almost references to the selection tag, in favor of using
get_selection_indices. The sole exception is in set_region, for which no
"set_selection" abstraction has yet been agreed upon.
+ Had too much fun using the spiffy new features of the format-paragraph
cmd.
this functionality is not present (e.g. when used with a vintage
Python 1.5.2 installation) top-level functions are not listed.
(Hmm... Any distribution of IDLE 0.5 should probably include a copy
of the new pyclbr.py!)
+ Set usetabs=1. Editing pyclbr.py was driving me nuts <0.6 wink>.
usetabs=1 is the Emacs pymode default too, and thanks to indentwidth !=
tabwidth magical usetabs disabling, new files are still created with tabs
turned off. The only implication is that if you open a file whose first
indent is a single tab, IDLE will now magically use tabs for that file (and
set indentwidth to 8). Note that the whole scheme doesn't work right for
PythonWin, though, since Windows users typically set tabwidth to 4; Mark
probably has to hide the IDLE algorithm from them (which he already knows).
+ Changed comment_region_event to stick "##" in front of every line. The
"holes" previously left on blank lines were visually confusing (made it
needlessly hard to figure out what to uncomment later).
Smarter logic for finding a parse synch point.
Does a half to a fifth the work in normal cases; don't notice the speedup,
but makes more breathing room for other extensions.
Speeds terrible cases by at least a factor of 10. "Terrible" == e.g. you put
""" at the start of Tkinter.py, undo it, zoom to the bottom, and start
typing in code. Used to take about 8 seconds for ENTER to respond, now some
large fraction of a second. The new code gets indented correctly, despite
that it all remains "string colored" until the colorizer catches up (after
which, ENTER appears instantaneous again).
IDLE is now the first Python editor in the Universe not confused by my
doctest.py <wink>.
As threatened, this defines IDLE's is_char_in_string function as a
method of EditorWindow. You just need to define one similarly in
whatever it is you pass as editwin to AutoIndent; looking at the
EditorWindow.py part of the patch should make this clear.
stuff for getting the tip. Had to fix the Key-( and Key-) events
for Unix. Will have to re-apply my patch for catching KeyRelease and
ButtonRelease events.
Unix bindings for <<toggle-tabs>> and <<change-indentwidth>> were
missing, and somehow that meant the events were never generated,
even though they were in the menu. The new Unix bindings are now
the same as the Windows bindings (M-t and M-u).
The new version (attached) is fast enough all the time in every real module
I have <whew!>. You can make it slow by, e.g., creating an open list with
5,000 90-character identifiers (+ trailing comma) each on its own line, then
adding an item to the end -- but that still consumes less than a second on
my P5-166. Response time in real code appears instantaneous.
Fixed some bugs.
New feature: when hitting ENTER and the cursor is beyond the line's leading
indentation, whitespace is removed on both sides of the cursor; before
whitespace was removed only on the left; e.g., assuming the cursor is
between the comma and the space:
def something(arg1, arg2):
^ cursor to the left of here, and hit ENTER
arg2): # new line used to end up here
arg2): # but now lines up the way you expect
New hack: AutoIndent has grown a context_use_ps1 Boolean config option,
defaulting to 0 (false) and set to 1 (only) by PyShell. Reason: handling
the fancy stuff requires looking backward for a parsing synch point; ps1
lines are the only sensible thing to look for in a shell window, but are a
bad thing to look for in a file window (ps1 lines show up in my module
docstrings often). PythonWin's shell should set this true too.
Persistent problem: strings containing def/class can still screw things up
completely. No improvement. Simplest workaround is on the user's head, and
consists of inserting e.g.
def _(): pass
(or any other def/class) after the end of the multiline string that's
screwing them up. This is especially irksome because IDLE's syntax coloring
is *not* confused, so when this happens the colors don't match the
indentation behavior they see.
[Tim, after adding some bracket smarts to AutoIndent.py]
> ...
> What it can't possibly do without reparsing large gobs of text is
> suggest a reasonable indent level after you've *closed* a bracket
> left open on some previous line.
> ...
The attached can, and actually fast enough to use -- most of the time. The
code is tricky beyond belief to achieve that, but it works so far; e.g.,
return len(string.expandtabs(str[self.stmt_start :
^ indents to caret
i],
^ indents to caret
self.tabwidth)) + 1
^ indents to caret
It's about as smart as pymode now, wrt both bracket and backslash
continuation rules. It does require reparsing large gobs of text, and if it
happens to find something that looks like a "def" or "class" or sys.ps1
buried in a multiline string, but didn't suck up enough preceding text to
see the start of the string, it's completely hosed. I can't repair that --
it's just too slow to reparse from the start of the file all the time.
AutoIndent has grown a new num_context_lines tuple attribute that controls
how far to look back, and-- like other params --this could/should be made
user-overridable at startup and per-file on the fly.
One new file in the attached, PyParse.py. The LineStudier (whatever it was
called <wink>) class was removed from AutoIndent; PyParse subsumes its
functionality.
Removed "New tabwidth" menu binding.
Added "a tab means how many spaces?" dialog to block tabify and untabify. I
think prompting for this is good now: they're usually at-most-once-per-file
commands, and IDLE can't let them change tabwidth from the Tk default
anymore, so IDLE can no longer presume to have any idea what a tab means.
Irony: for the purpose of keeping comments aligned via tabs, Tk's
non-default approach is much nicer than the Emacs/Notepad/Codewright/vi/etc
approach.
2. No longer need to reset pyclbr cache and show watch cursor when calling
ClassBrowser -- the ClassBrowser takes care of pyclbr and the TreeWidget
takes care of the watch cursor.
3. Reset the focus to the current window after error message about class
browser on buffer without filename.
I'm still unsure, but couldn't stand the virtual event trickery so tried a
different sin (adding undo_block_start/stop methods to the Text instance in
EditorWindow.py). Like it or not, it's efficient and works <wink>. Better
idea?
Give the attached a whirl. Even if you hate the implementation, I think
you'll like the results. Think I caught all the "block edit" cmds,
including Format Paragraph, plus subtler ones involving smart indents and
backspacing.
[W]hile trying to dope out how redirection works, stumbled into two
possible glitches. In the first, it doesn't appear to make sense to try to
rename a command that's already been destroyed; in the second, the name
"previous" doesn't really bring to mind "ignore the previous value" <wink>.
Guido van Rossum
Jeremy Hylton