test-revlog-raw: fix "genbits" implementation The "genbits" implementation is actually incorrect. This patch fixes it. A good "genbits" implementation should pass the below assertion: n = 3 # or other number l = list(genbits(n)) assert 2**(n*2) == len(set((l[i]<<n)+l[i+1] for i in range(len(l)-1))) An assertion is added to make sure "genbits" won't work unexpectedly.

verify: fix length check According to the document added above, we should check L1 == L2, and the only way to get L1 in all cases is to call "rawsize()", and the only way to get L2 is to call "revision(raw=True)". Therefore the fix. Meanwhile there are still a lot of things about flagprocessor broken in revlog.py. Tests will be added after revlog.py gets fixed.

verify: document corner cases It seems a good idea to list all kinds of "surprises" and expected behavior to make the upcoming changes easier to understand. Note: the comment added does not reflect the actual behavior of the current code.

hgweb: expose a followlines UI in filerevision view In filerevision view (/file/<rev>/<fname>) we add some event listeners on mouse clicks of <span> elements in the <pre class="sourcelines"> block. Those listeners will capture a range of lines selected between two mouse clicks and a box inviting to follow the history of selected lines will then show up. Selected lines (i.e. the block of lines) get a CSS class which make them highlighted. Selection can be cancelled (and restarted) by either clicking on the cancel ("x") button in the invite box or clicking on any other source line. Also clicking twice on the same line will abort the selection and reset event listeners to restart the process. As a first step, this action is only advertised by the "cursor: cell" CSS rule on source lines elements as any other mechanisms would make the code significantly more complicated. This might be improved later. All JavaScript code lives in a new "linerangelog.js" file, sourced in filerevision template (only in "paper" style for now).