add cancellation support to the mixed-commits checker in worktree.c

load tog's worktree base commit marker in the log thread for startup speed Walking the whole file index can take some time. Avoid delaying the perceived start-up time of tog by reading the file index in the background log thread. Problem pointed out by op@ with fixes from + ok jamsek

tog: show work tree base commit marker in log view If tog is invoked in a work tree, prefix the base commit log message summary line with a '*' if the work tree is up-to-date, and with a '~' if the base commit is not up-to-date with respect to the branch tip or it contains mixed commits. While here, plug a couple worktree leaks in cmd_ref() and cmd_tree(). ok stsp@

use a separate .cvg meta data directory for cvg(1) work trees This prevents mixing the use of got and cvg clients in the same work tree. Avoids confusion going forward while cvg differentiates itself further. tog(1) and gotadmin(1) remain compatible with both work tree formats. These tools only read work trees to locate the corresponding repository.

Implement fast-forward merges. Split part of got_worktree_merge_prepare into a new function, got_worktree_merge_write_refs, since that part doesn't make sense in the fast-forward case. ok stsp@

add ci/he/mg/rb -C option to commit unresolved conflicts As per stsp's suggestion and building on his initial diff, add the -C option to enable creating commits with unresolved conflicts to the commit, histedit, merge, and rebase commands to allow continuing the operation despite files in conflict status. Also, only search for conflict markers in newly added lines to enable working with files already under version control that may have conflict markers embedded verbatim. lots of tweaks, improvements, and initial diff + ok stsp@

zap unused parameter in got_worktree_rebase_complete() ok stsp@

got: load editor with backout/cherrypick commit log messages Create new logmsg references used to populate the editor with the log messages of backed-out and cherrypicked commits when 'got commit' is run. We use versioned path state heuristics during revert and commit commands in an effort to ensure the editor is only populated with the log messages of backed-out and/or cherrypicked commits involving paths with local changes that are being committed. This is an implementation of an initial idea and algorithm designed by stsp. inputs, improvments and ok stsp@

got: minor refactor of got_pathlist_free() API Accept flag parameter to optionally specify which pointers to free. This saves callers looping through the list to free pointers. ok + fix stsp@

provide a diff of changes in a temp file while editing a commit log message ok landry@

remove trailing whitespace; patch by Josiah Frentsos

reset committer during rebase and histedit ok op@

refactor got_patch / got_worktree_patch_complete let got_patch own fileindex_path and call got_worktree_patch_complete only if got_wokrtree_patch_prepare hasn't failed. suggested by stsp@

got patch: avoid open/sync/close the fileindex over and over again Instead of flushing the fileindex after every patch in the patchfile just reuse the same fileindex and sync it only at the end of the patch operation. This speeds up 'got patch' on large repositories by quite a lot.

move got_patch file status checking in worktree.c check_file_status used got_worktree_status to check if the file was in an allowed state, but it's wrong since the callback is not invoked on unchanged files. While here also fix a relate bug: unlink(newpath) is in the wrong spot and ends up removing files even when it shouldn't, so move it early in the got_worktree_schedule_* error handling. Finally, update the appropriate test case. It was passing before because got_worktree_schedule_add returned GOT_ERR_FILE_STATUS, not because check_file_status failed. ok stsp@

make 'got rm' behave like rm(1) for paths found missing on disk ok millert@

show commit progress output when 'got merge -c' is used Otherwise no progress output is shown at all with this command. Commit progress output will also display any additional changes which resulted from conflict resolution. ok millert@

add a 'got merge' command for creating merge commits Additional testing by Thomas Adam. ok tracey

indentation fixes

new -I option for 'got status' to show files which match an ignore pattern

ensure that old commits remain referenced after rebase and histedit Create automatic "backup" references which ensure that objects from the pre-rebase or pre-histedit state remain in the repository. A new -l option for 'got rebase' and 'got histedit' lists old commits. This makes it easier to recover from botched rebase or histedit operations. Removal of such objects currently requires got ref -d and git-gc. This will be made more convenient in the future. testing and ok jrick

add per-worktree got.conf(5) file in the .got directory; ok millert

add -s option to 'got remove' which deletes files in a particular status This makes it easy to deal with files that were deleted from disk by external tooling which modified the work tree. Such files are left in missing (!) status and can now be marked for deletion in bulk via 'got rm -s\! -R .' For consistency, modified (M) files can now be removed with 'got rm -s M' which implies 'got rm -f'. Prompted by feedback from krw@

Add a 'got info' command which displays work tree meta-data. Remove the alias 'got in' for 'got init'. The 'in' alias was too close to either 'init' or 'info'. ok tracey, millert

forbid bad symlinks; add -S option to 'got commit' and 'got stage' to allow them