sparse-revlog: skip the span check in the sparse-revlog case This significantly improves the performance on unbundling on smaller repositories. Mercurial: unbundling 1K revisions no-sparse-revlog: 500 ms sparse-revlog-before: 689 ms sparse-revlog-after: 484 ms Pypy: unbundling 1K revisions no-sparse-revlog: 1.242 s sparse-revlog-before: 1.135 s sparse-revlog-after: 0.860 s NetBeans: unbundling 1K revisions no-sparse-revlog: 1.386 s sparse-revlog-before: 2.368 s sparse-revlog-after: 1.191 s Mozilla: unbundling 1K revisions no-sparse-revlog: 3.103 s sparse-revlog-before: 3.367 s sparse-revlog-after: 3.093 s

histedit: import chistedit curses UI from hg-experimental I don't tend to like curses interfaces, but this gets enough use at work that it seems like it's worth bringing into core. This is a minimal import from hg-experimental revision 4c7f33bf5f00, in that I've done the smallest amount of code movement and editing in order to import the functionality. .. feature:: `hg histedit` will now present a curses UI if curses is available and `ui.interface` or `ui.interface.histedit` is set to `curses`. Differential Revision: https://phab.mercurial-scm.org/D5146

manifest: perform cheap checks before potentially allocating memory Differential Revision: https://phab.mercurial-scm.org/D5258

manifest: also reject obviously-too-short lines when parsing lines Differential Revision: https://phab.mercurial-scm.org/D5257