tags: write tag overwriting history also into tag cache file (issue3911) Before this patch, tag overwriting history is not written into tag cache file ".hg/cache/tags". This may give higher priority to local tag than global one, even if the former is overwritten by the latter, because tag overwriting history is used to compare priorities of them (as "rank"). In such cases, "hg tags" invocations using tag cache file shows incorrect tag information. This patch writes tag overwriting history also into tag cache file.

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#!/usr/bin/env python

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__doc__ = """Same as `echo a >> b`, but ensures a changed mtime of b.

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Without this svn will not detect workspace changes."""

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import sys, os

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text = sys.argv[1]

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fname = sys.argv[2]

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f = open(fname, "ab")

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try:

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    before = os.fstat(f.fileno()).st_mtime

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    f.write(text)

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    f.write("\n")

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finally:

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    f.close()

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inc = 1

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now = os.stat(fname).st_mtime

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while now == before:

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    t = now + inc

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    inc += 1

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    os.utime(fname, (t, t))

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    now = os.stat(fname).st_mtime

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