Flags to control status callbacks

• GIT_STATUS_OPT_INCLUDE_UNTRACKED says that callbacks should be made on untracked files. These will only be made if the workdir files are included in the status "show" option.
• GIT_STATUS_OPT_INCLUDE_IGNORED says that ignored files get callbacks. Again, these callbacks will only be made if the workdir files are included in the status "show" option.
• GIT_STATUS_OPT_INCLUDE_UNMODIFIED indicates that callback should be made even on unmodified files.
• GIT_STATUS_OPT_EXCLUDE_SUBMODULES indicates that submodules should be skipped. This only applies if there are no pending typechanges to the submodule (either from or to another type).
• GIT_STATUS_OPT_RECURSE_UNTRACKED_DIRS indicates that all files in untracked directories should be included. Normally if an entire directory is new, then just the top-level directory is included (with a trailing slash on the entry name). This flag says to include all of the individual files in the directory instead.
• GIT_STATUS_OPT_DISABLE_PATHSPEC_MATCH indicates that the given path should be treated as a literal path, and not as a pathspec pattern.
• GIT_STATUS_OPT_RECURSE_IGNORED_DIRS indicates that the contents of ignored directories should be included in the status. This is like doing git ls-files -o -i --exclude-standard with core git.
• GIT_STATUS_OPT_RENAMES_HEAD_TO_INDEX indicates that rename detection should be processed between the head and the index and enables the GIT_STATUS_INDEX_RENAMED as a possible status flag.
• GIT_STATUS_OPT_RENAMES_INDEX_TO_WORKDIR indicates that rename detection should be run between the index and the working directory and enabled GIT_STATUS_WT_RENAMED as a possible status flag.
• GIT_STATUS_OPT_SORT_CASE_SENSITIVELY overrides the native case sensitivity for the file system and forces the output to be in case-sensitive order
• GIT_STATUS_OPT_SORT_CASE_INSENSITIVELY overrides the native case sensitivity for the file system and forces the output to be in case-insensitive order
• GIT_STATUS_OPT_RENAMES_FROM_REWRITES indicates that rename detection should include rewritten files
• GIT_STATUS_OPT_NO_REFRESH bypasses the default status behavior of doing a "soft" index reload (i.e. reloading the index data if the file on disk has been modified outside libgit2).
• GIT_STATUS_OPT_UPDATE_INDEX tells libgit2 to refresh the stat cache in the index for files that are unchanged but have out of date stat information in the index. It will result in less work being done on subsequent calls to get status. This is mutually exclusive with the NO_REFRESH option.

Calling git_status_foreach() is like calling the extended version with: GIT_STATUS_OPT_INCLUDE_IGNORED, GIT_STATUS_OPT_INCLUDE_UNTRACKED, and GIT_STATUS_OPT_RECURSE_UNTRACKED_DIRS. Those options are bundled together as GIT_STATUS_OPT_DEFAULTS if you want them as a baseline.