got patch: allow to reverse a patch add a flag to got_patch to reverse a patch before applying and the -R flag for `got patch'. ok stsp@

got-read-patch: preserve all \ lines as a cheap optimization got-read-patch was sending only the "\ No newline at end of file" lines that follows an addition (a "+" line). To be able to reverse patches in the future got_patch needs to know about all of these lines instead. No functional changes intended. ok stsp@

got patch: resolve paths from the current working directory this allow to apply patches from subdirectories of the work tree root. Prodded by naddy@, ok stsp@.

fix wrong path in error message

got patch: allow to strip path components Move some bits from the libexec helper to the main process so we know if the patch was generated by git or not and finally document the automatic stripping of a/ and b/ prefixes added by git-diff(1). ok stsp@

remove trailing whitespaces

got patch: handle "\ No newline at end of file"

reuse apply_hunk in patch_file when creating a file

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@

style

augment patch progress callback with hunks info; recover from errors Augment got_patch_progress_cb by providing the hunks that were applied with offset (or that failed) and the recoverable error encountered during the operation (bad status, missing file, ...) got_patch now proceeds when a file fails to be patched and exits with GOT_ERR_PATCH_FAILED if no other errors are encountered. While here, also add a test for the 'hunk applied with offset' case and shrink test_patch_dont_apply and illegal_status by taking advantage that 'got patch' doesn't stop at the first error. (And add some other cases to illegal_status too.) discussed with and ok stsp@

got patch: create missing directories when adding files ok stsp@

got patch: keep permissions after patching a file ok stsp@

introduce got_patch_progress_cb This introduce a proper got_patch specific progress callback that is invoked after processing a patch. It also drops the hackish printf in the modified case and takes `nop' out of the struct got_patch. ok stsp

add a dry-run/nop mode for got patch with lots of help from stsp for the manpage bits!