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Name	Size	Perms	Modified	Actions
[ .. / .. ]
AutoComplete.py	8.75 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
AutoComplete.pyc	8.01 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
AutoComplete.pyo	8.01 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
AutoCompleteWindow.py	16.91 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
AutoCompleteWindow.pyc	12.45 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
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AutoExpand.py	3.32 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
AutoExpand.pyc	3.51 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
AutoExpand.pyo	3.51 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
Bindings.py	2.91 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
Bindings.pyc	4.6 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
Bindings.pyo	4.6 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
CREDITS.txt	1.82 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
CallTipWindow.py	5.92 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
CallTipWindow.pyc	6.17 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
CallTipWindow.pyo	6.17 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
CallTips.py	7.56 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
CallTips.pyc	8.19 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
CallTips.pyo	8.19 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
ChangeLog	55.07 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
ClassBrowser.py	6.83 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
ClassBrowser.pyc	9.72 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
ClassBrowser.pyo	9.72 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
CodeContext.py	8.15 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
CodeContext.pyc	6.65 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
CodeContext.pyo	6.61 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
ColorDelegator.py	9.53 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
ColorDelegator.pyc	8.94 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
ColorDelegator.pyo	8.94 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
Debugger.py	17.81 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
Debugger.pyc	17.81 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
Debugger.pyo	17.81 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
Delegator.py	665 B	-rw-r--r--	2023-02-03 08:01:06	Edit Del
Delegator.pyc	1.33 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
Delegator.pyo	1.33 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
EditorWindow.py	63.96 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
EditorWindow.pyc	57.4 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
EditorWindow.pyo	57.3 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
FileList.py	3.63 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
FileList.pyc	4.09 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
FileList.pyo	4.06 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
FormatParagraph.py	7.12 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
FormatParagraph.pyc	7.17 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
FormatParagraph.pyo	7.17 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
GrepDialog.py	5.02 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
GrepDialog.pyc	6.48 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
GrepDialog.pyo	6.48 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
HISTORY.txt	10.08 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
HyperParser.py	10.25 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
HyperParser.pyc	6.66 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
HyperParser.pyo	6.66 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
IOBinding.py	21.4 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
IOBinding.pyc	18.7 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
IOBinding.pyo	18.7 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
Icons	-	drwxr-xr-x	2023-02-03 08:01:06	Del
IdleHistory.py	3.96 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
IdleHistory.pyc	4.07 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
IdleHistory.pyo	4.07 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
MultiCall.py	17.29 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
MultiCall.pyc	16.47 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
MultiCall.pyo	16.39 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
MultiStatusBar.py	1.32 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
MultiStatusBar.pyc	2.31 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
MultiStatusBar.pyo	2.31 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
NEWS.txt	46.14 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
ObjectBrowser.py	4.27 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
ObjectBrowser.pyc	7.31 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
ObjectBrowser.pyo	7.31 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
OutputWindow.py	4.47 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
OutputWindow.pyc	5.33 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
OutputWindow.pyo	5.33 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
ParenMatch.py	6.56 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
ParenMatch.pyc	7.21 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
ParenMatch.pyo	7.21 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
PathBrowser.py	2.94 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
PathBrowser.pyc	4.6 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
PathBrowser.pyo	4.6 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
Percolator.py	3.15 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
Percolator.pyc	4.72 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
Percolator.pyo	4.54 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
PyParse.py	19.05 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
PyParse.pyc	10.02 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
PyParse.pyo	9.59 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
PyShell.py	57.48 KB	-rwxr-xr-x	2023-02-03 08:01:06	Edit Del
PyShell.pyc	53.21 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
PyShell.pyo	53.11 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
README.txt	7.71 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
RemoteDebugger.py	11.36 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
RemoteDebugger.pyc	16.85 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
RemoteDebugger.pyo	16.7 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
RemoteObjectBrowser.py	942 B	-rw-r--r--	2023-02-03 08:01:06	Edit Del
RemoteObjectBrowser.pyc	2.25 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
RemoteObjectBrowser.pyo	2.25 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
ReplaceDialog.py	6.48 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
ReplaceDialog.pyc	7.87 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
ReplaceDialog.pyo	7.87 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
RstripExtension.py	1.03 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
RstripExtension.pyc	1.63 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
RstripExtension.pyo	1.63 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
ScriptBinding.py	8.26 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
ScriptBinding.pyc	8.2 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
ScriptBinding.pyo	8.2 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
ScrolledList.py	4.27 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
ScrolledList.pyc	6.65 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
ScrolledList.pyo	6.65 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
SearchDialog.py	2.57 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
SearchDialog.pyc	4.07 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
SearchDialog.pyo	4.07 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
SearchDialogBase.py	6.93 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
SearchDialogBase.pyc	8.45 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
SearchDialogBase.pyo	8.45 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
SearchEngine.py	7.29 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
SearchEngine.pyc	8.42 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
SearchEngine.pyo	8.42 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
StackViewer.py	4.33 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
StackViewer.pyc	6.56 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
StackViewer.pyo	6.56 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
TODO.txt	8.28 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
ToolTip.py	3.1 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
ToolTip.pyc	4.81 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
ToolTip.pyo	4.81 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
TreeWidget.py	14.68 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
TreeWidget.pyc	18.06 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
TreeWidget.pyo	18.06 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
UndoDelegator.py	10.53 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
UndoDelegator.pyc	13.98 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
UndoDelegator.pyo	13.98 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
WidgetRedirector.py	6.74 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
WidgetRedirector.pyc	7.79 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
WidgetRedirector.pyo	7.79 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
WindowList.py	2.42 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
WindowList.pyc	3.77 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
WindowList.pyo	3.77 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
ZoomHeight.py	1.27 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
ZoomHeight.pyc	1.68 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
ZoomHeight.pyo	1.68 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
__init__.py	288 B	-rw-r--r--	2023-02-03 08:01:06	Edit Del
__init__.pyc	446 B	-rw-r--r--	2023-02-03 08:01:08	Edit Del
__init__.pyo	446 B	-rw-r--r--	2023-02-03 08:01:12	Edit Del
aboutDialog.py	6.85 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
aboutDialog.pyc	6.88 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
aboutDialog.pyo	6.88 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
config-extensions.def	2.9 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
config-highlight.def	2.46 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
config-keys.def	7.59 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
config-main.def	2.5 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
configDialog.py	64.41 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
configDialog.pyc	53.33 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
configDialog.pyo	53.33 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
configHandler.py	31.72 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
configHandler.pyc	29.38 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
configHandler.pyo	29.38 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
configHelpSourceEdit.py	6.53 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
configHelpSourceEdit.pyc	6.57 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
configHelpSourceEdit.pyo	6.57 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
configSectionNameDialog.py	3.95 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
configSectionNameDialog.pyc	4.42 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
configSectionNameDialog.pyo	4.42 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
dynOptionMenuWidget.py	1.94 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
dynOptionMenuWidget.pyc	2.81 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
dynOptionMenuWidget.pyo	2.81 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
extend.txt	3.56 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
help.html	41.42 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
help.py	10.78 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
help.pyc	12.29 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
help.pyo	12.29 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
help.txt	11.86 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
idle.bat	177 B	-rwxr-xr-x	2023-02-03 08:01:06	Edit Del
idle.py	453 B	-rw-r--r--	2023-02-03 08:01:06	Edit Del
idle.pyc	425 B	-rw-r--r--	2023-02-03 08:01:08	Edit Del
idle.pyo	425 B	-rw-r--r--	2023-02-03 08:01:12	Edit Del
idle.pyw	563 B	-rw-r--r--	2023-02-03 08:01:06	Edit Del
idle_test	-	drwxr-xr-x	2023-02-03 08:01:12	Del
idlever.py	415 B	-rw-r--r--	2023-02-03 08:01:06	Edit Del
idlever.pyc	593 B	-rw-r--r--	2023-02-03 08:01:08	Edit Del
idlever.pyo	593 B	-rw-r--r--	2023-02-03 08:01:12	Edit Del
keybindingDialog.py	12.18 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
keybindingDialog.pyc	12.11 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
keybindingDialog.pyo	12.11 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
macosxSupport.py	8.24 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
macosxSupport.pyc	8.42 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
macosxSupport.pyo	8.28 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
rpc.py	19.68 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
rpc.pyc	22.08 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
rpc.pyo	21.98 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
run.py	12.61 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
run.pyc	13.5 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
run.pyo	13.44 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del
tabbedpages.py	18.01 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
tabbedpages.pyc	18.71 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
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textView.py	3.44 KB	-rw-r--r--	2023-02-03 08:01:06	Edit Del
textView.pyc	4.03 KB	-rw-r--r--	2023-02-03 08:01:08	Edit Del
textView.pyo	4.03 KB	-rw-r--r--	2023-02-03 08:01:12	Edit Del

Editing: SearchEngine.py (7.29 KB)

'''Define SearchEngine for search dialogs.'''
import re
from Tkinter import StringVar, BooleanVar, TclError
import tkMessageBox

def get(root):
    '''Return the singleton SearchEngine instance for the process.

    The single SearchEngine saves settings between dialog instances.
    If there is not a SearchEngine already, make one.
    '''
    if not hasattr(root, "_searchengine"):
        root._searchengine = SearchEngine(root)
        # This creates a cycle that persists until root is deleted.
    return root._searchengine

class SearchEngine:
    """Handles searching a text widget for Find, Replace, and Grep."""

    def __init__(self, root):
        '''Initialize Variables that save search state.

        The dialogs bind these to the UI elements present in the dialogs.
        '''
        self.root = root  # need for report_error()
        self.patvar = StringVar(root, '')   # search pattern
        self.revar = BooleanVar(root, False)   # regular expression?
        self.casevar = BooleanVar(root, False)   # match case?
        self.wordvar = BooleanVar(root, False)   # match whole word?
        self.wrapvar = BooleanVar(root, True)   # wrap around buffer?
        self.backvar = BooleanVar(root, False)   # search backwards?

    # Access methods

    def getpat(self):
        return self.patvar.get()

    def setpat(self, pat):
        self.patvar.set(pat)

    def isre(self):
        return self.revar.get()

    def iscase(self):
        return self.casevar.get()

    def isword(self):
        return self.wordvar.get()

    def iswrap(self):
        return self.wrapvar.get()

    def isback(self):
        return self.backvar.get()

    # Higher level access methods

    def setcookedpat(self, pat):
        "Set pattern after escaping if re."
        # called only in SearchDialog.py: 66
        if self.isre():
            pat = re.escape(pat)
        self.setpat(pat)

    def getcookedpat(self):
        pat = self.getpat()
        if not self.isre():  # if True, see setcookedpat
            pat = re.escape(pat)
        if self.isword():
            pat = r"\b%s\b" % pat
        return pat

    def getprog(self):
        "Return compiled cooked search pattern."
        pat = self.getpat()
        if not pat:
            self.report_error(pat, "Empty regular expression")
            return None
        pat = self.getcookedpat()
        flags = 0
        if not self.iscase():
            flags = flags | re.IGNORECASE
        try:
            prog = re.compile(pat, flags)
        except re.error as what:
            args = what.args
            msg = args[0]
            col = args[1] if len(args) >= 2 else -1
            self.report_error(pat, msg, col)
            return None
        return prog

    def report_error(self, pat, msg, col=-1):
        # Derived class could override this with something fancier
        msg = "Error: " + str(msg)
        if pat:
            msg = msg + "\nPattern: " + str(pat)
        if col >= 0:
            msg = msg + "\nOffset: " + str(col)
        tkMessageBox.showerror("Regular expression error",
                               msg, master=self.root)

    def search_text(self, text, prog=None, ok=0):
        '''Return (lineno, matchobj) or None for forward/backward search.

        This function calls the right function with the right arguments.
        It directly return the result of that call.

        Text is a text widget. Prog is a precompiled pattern.
        The ok parameter is a bit complicated as it has two effects.

        If there is a selection, the search begin at either end,
        depending on the direction setting and ok, with ok meaning that
        the search starts with the selection. Otherwise, search begins
        at the insert mark.

        To aid progress, the search functions do not return an empty
        match at the starting position unless ok is True.
        '''

        if not prog:
            prog = self.getprog()
            if not prog:
                return None # Compilation failed -- stop
        wrap = self.wrapvar.get()
        first, last = get_selection(text)
        if self.isback():
            if ok:
                start = last
            else:
                start = first
            line, col = get_line_col(start)
            res = self.search_backward(text, prog, line, col, wrap, ok)
        else:
            if ok:
                start = first
            else:
                start = last
            line, col = get_line_col(start)
            res = self.search_forward(text, prog, line, col, wrap, ok)
        return res

    def search_forward(self, text, prog, line, col, wrap, ok=0):
        wrapped = 0
        startline = line
        chars = text.get("%d.0" % line, "%d.0" % (line+1))
        while chars:
            m = prog.search(chars[:-1], col)
            if m:
                if ok or m.end() > col:
                    return line, m
            line = line + 1
            if wrapped and line > startline:
                break
            col = 0
            ok = 1
            chars = text.get("%d.0" % line, "%d.0" % (line+1))
            if not chars and wrap:
                wrapped = 1
                wrap = 0
                line = 1
                chars = text.get("1.0", "2.0")
        return None

    def search_backward(self, text, prog, line, col, wrap, ok=0):
        wrapped = 0
        startline = line
        chars = text.get("%d.0" % line, "%d.0" % (line+1))
        while 1:
            m = search_reverse(prog, chars[:-1], col)
            if m:
                if ok or m.start() < col:
                    return line, m
            line = line - 1
            if wrapped and line < startline:
                break
            ok = 1
            if line <= 0:
                if not wrap:
                    break
                wrapped = 1
                wrap = 0
                pos = text.index("end-1c")
                line, col = map(int, pos.split("."))
            chars = text.get("%d.0" % line, "%d.0" % (line+1))
            col = len(chars) - 1
        return None

def search_reverse(prog, chars, col):
    '''Search backwards and return an re match object or None.

    This is done by searching forwards until there is no match.
    Prog: compiled re object with a search method returning a match.
    Chars: line of text, without \\n.
    Col: stop index for the search; the limit for match.end().
    '''
    m = prog.search(chars)
    if not m:
        return None
    found = None
    i, j = m.span()  # m.start(), m.end() == match slice indexes
    while i < col and j <= col:
        found = m
        if i == j:
            j = j+1
        m = prog.search(chars, j)
        if not m:
            break
        i, j = m.span()
    return found

def get_selection(text):
    '''Return tuple of 'line.col' indexes from selection or insert mark.
    '''
    try:
        first = text.index("sel.first")
        last = text.index("sel.last")
    except TclError:
        first = last = None
    if not first:
        first = text.index("insert")
    if not last:
        last = first
    return first, last

def get_line_col(index):
    '''Return (line, col) tuple of ints from 'line.col' string.'''
    line, col = map(int, index.split(".")) # Fails on invalid index
    return line, col

if __name__ == "__main__":
    import unittest
    unittest.main('idlelib.idle_test.test_searchengine', verbosity=2, exit=False)