test: remove remaining sed calls

disable expansion in kwfilelog.read() if file renamed in node Simplifies kwfilelog.cmp() and avoids fiddling with/importing revlog. Reorder imports alphabetically.

Make iskwfile() a weeding method in lieu of a boolean Update iskwfile docstring.

Support copy and rename copy/rename destinations being unversioned and possibly ignored by the extension should not contain expanded keywords. Files copied/renamed from an ignored source are not touched. Add tests covering both of the above cases, plus the corner case of cp symlink foo; hg cp -A symlink foo (where foo becomes a regular file).

Refactor kwtemplater.overwrite() Make kwexpand, kwshrink restricted commands - i.e. read from filelog without expansion for substition in kwtemplater.overwrite, and set/unset restricted mode for overwrite() in in kwcommitctx and the dorecord wrapper. Preselect candidates when working on changed files (rollback, record) outside kwtemplater class, and remove 6th argument from overwrite(). Avoid duplicate substitution/search in overwrite(): Only go into restricted read mode when reading from filelog. rollback and record read from the working directory, where restricted mode would already shrink keywords before overwrite() either expands or shrinks them again. This ensures that the usual automatic operations on keywords are turned off during overwrite() and only overwrite() itself acts on them. Reduce manifest calculation to the cases where it is needed. Move helper function for expansion removal outside kwtemplater class.

Use workingctx to detect modified and added files after rollback

Rename variable "cfiles" to "changed" for clarity

Merge with default

Support rollback by restoring expansion to previous values Prevent spurious differences in the working directory after a rollback. Add tests for several rollback situations.

Do not expand at all during diff Always shrink and never expand keywords during a diff operation. Avoid user distraction e.g. because of spurious differences appearing in the commit editor.

Restore restricted read mode value after overwriting Even though just enforcing expansion after overwriting files in the working directory caused no problems that we know of, this avoids a potential source of problems (e.g. in collaboration other extensions) at no costs.

test: fix typo, rephrase

Merge with default

Use note admonition in help text