On Tue, Jul 9, 2013 at 1:42 PM, Thomas Rast <tr...@inf.ethz.ch> wrote:
> Junio C Hamano <gits...@pobox.com> writes:
>>  (2) In the ranges "-L <anything>,/B/ -L /C/,<anything>", the
>>      beginning of the second range is found by choosing C that comes
>>      _after_ the end of the previous range (/B/ may choose either
>>      the second or the 4th line, and the only C that comes after
>>      either of them is the 5th line and that is where the second
>>      range should begin, not at the beginning of the file).  The
>>      same for "-L 1,3 -L /C/" (only C that comes after 3 is eligible
>>      to be the beginning of the second range).
> So passing several -L arguments does not blame the union of what each
> argument would blame individually?  Doesn't that make it rather harder
> to explain?

I don't think Junio meant to imply that. Collecting the blame ranges
can/should be a distinct step from coalescing them. Junio is saying
that an -L /re/ range search should start after the maximum line
number already specified by any preceding range. Once all input ranges
are collected, they can be coalesced. (If a -L /re/ range happens to
be coalesced with or into some other range, that's fine: you're still
seeing blame output for the requested lines.)

-- ES
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