view README @ 30554:1775975dd439

shelve: move patch extension to a string constant

We are using 'name + ".patch"' pattern throughout the shelve code to
identify the existence of a shelve with a particular name. In two
cases however we use 'name + ".hg"' instead. This commit makes
'patch' be used in all places and "emphasizes" it by moving
'patch' to live in a constant. Also, this allows to extract file
name without extension like this:
    f[:-(1 + len(patchextension))]
instead of:
    f[:-6]
which is good IMO.

This is a first patch from this initial "obsshelve" series. This
series does not include tests, although locally I have all of
test-shelve.t ported to test obs-shelve as well. I will send tests
later as a separate series.

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