Re: qgit: Annotate hundreds of files at terrific speed ;-)

On 6/25/07, Nanako Shiraishi [off-list ref] wrote:

quoted

quoted

Marco Costalba [off-list ref] wrote:

- filtering, ie selecting with the mouse some lines and getting a
subset of the file history that modified at least one of that lines is
not possible.

I often use "git blame -L'/regexp/,/regexp/'" (you can use line
numbers there, too).  Is this different from what you talk above?

Yes it.

Suppose you have selected file lines from 20 to 23 in revision A.

Revision history it's the following, in cronological order:

A (oldest) -> B - > C (newest)

Say that in revision B the patch removed 5 lines from 5 to 10 and
added 2 new lines instead.

Now when you jump from A to revision C you may want to see selected
the lines (-5 + 2 = -3) from 17 to 20 and no more the lines from 20 to
23 that will point to a different content.


In a general case jumping from a revision A to a revision N you have to:

- get the list of intermediate revision

- for each revision calculate deleted/ added content that is before
the selected lines range.

- for each revision calculate deleted/ added content that CROSSES the
selected range, so that if in our example revision B adds also 2 new
lines in position 21 the selection in C will not be 17 to 20 but 17 to
22!  The same logic in case of deleted lines in selected range.

So to keep a "consistent" mouse selection when jumping to different
file revisions you really need to know all the annotate history in
between.


Marco