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−# strutil.py - string utilities for Mercurial
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−#
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−# Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com>
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−#
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−# This software may be used and distributed according to the terms of the
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−# GNU General Public License version 2 or any later version.
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−
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−def findall(haystack, needle, start=0, end=None):
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−    if end is None:
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−        end = len(haystack)
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−    if end < 0:
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−        end += len(haystack)
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−    if start < 0:
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−        start += len(haystack)
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−    while start < end:
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−        c = haystack.find(needle, start, end)
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−        if c == -1:
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−            break
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−        yield c
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−        start = c + 1
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−
+
−def rfindall(haystack, needle, start=0, end=None):
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−    if end is None:
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−        end = len(haystack)
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−    if end < 0:
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−        end += len(haystack)
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−    if start < 0:
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−        start += len(haystack)
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−    while end >= 0:
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−        c = haystack.rfind(needle, start, end)
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−        if c == -1:
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−            break
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−        yield c
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−        end = c - 1