Merge branch 'en/sparse-checkout'

"sparse-checkout" UI improvements.

* en/sparse-checkout:
  sparse-checkout: provide a new reapply subcommand
  unpack-trees: failure to set SKIP_WORKTREE bits always just a warning
  unpack-trees: provide warnings on sparse updates for unmerged paths too
  unpack-trees: make sparse path messages sound like warnings
  unpack-trees: split display_error_msgs() into two
  unpack-trees: rename ERROR_* fields meant for warnings to WARNING_*
  unpack-trees: move ERROR_WOULD_LOSE_SUBMODULE earlier
  sparse-checkout: use improved unpack_trees porcelain messages
  sparse-checkout: use new update_sparsity() function
  unpack-trees: add a new update_sparsity() function
  unpack-trees: pull sparse-checkout pattern reading into a new function
  unpack-trees: do not mark a dirty path with SKIP_WORKTREE
  unpack-trees: allow check_updates() to work on a different index
  t1091: make some tests a little more defensive against failures
  unpack-trees: simplify pattern_list freeing
  unpack-trees: simplify verify_absent_sparse()
  unpack-trees: remove unused error type
  unpack-trees: fix minor typo in comment

1 files changed, 20 insertions, 8 deletions

diff --git a/unpack-trees.h b/unpack-trees.h
index ad41b45..9c2f082 100644
--- a/unpack-trees.h
+++ b/unpack-trees.h
@@ -22,11 +22,15 @@ enum unpack_trees_error_types {
 	ERROR_WOULD_LOSE_UNTRACKED_OVERWRITTEN,
 	ERROR_WOULD_LOSE_UNTRACKED_REMOVED,
 	ERROR_BIND_OVERLAP,
-	ERROR_SPARSE_NOT_UPTODATE_FILE,
-	ERROR_WOULD_LOSE_ORPHANED_OVERWRITTEN,
-	ERROR_WOULD_LOSE_ORPHANED_REMOVED,
 	ERROR_WOULD_LOSE_SUBMODULE,
-	NB_UNPACK_TREES_ERROR_TYPES
+
+	NB_UNPACK_TREES_ERROR_TYPES,
+
+	WARNING_SPARSE_NOT_UPTODATE_FILE,
+	WARNING_SPARSE_UNMERGED_FILE,
+	WARNING_SPARSE_ORPHANED_NOT_OVERWRITTEN,
+
+	NB_UNPACK_TREES_WARNING_TYPES,
 };
 
 /*
@@ -59,20 +63,19 @@ struct unpack_trees_options {
 		     quiet,
 		     exiting_early,
 		     show_all_errors,
-		     dry_run,
-		     keep_pattern_list;
+		     dry_run;
 	const char *prefix;
 	int cache_bottom;
 	struct dir_struct *dir;
 	struct pathspec *pathspec;
 	merge_fn_t fn;
-	const char *msgs[NB_UNPACK_TREES_ERROR_TYPES];
+	const char *msgs[NB_UNPACK_TREES_WARNING_TYPES];
 	struct argv_array msgs_to_free;
 	/*
 	 * Store error messages in an array, each case
 	 * corresponding to a error message type
 	 */
-	struct string_list unpack_rejects[NB_UNPACK_TREES_ERROR_TYPES];
+	struct string_list unpack_rejects[NB_UNPACK_TREES_WARNING_TYPES];
 
 	int head_idx;
 	int merge_size;
@@ -91,6 +94,15 @@ struct unpack_trees_options {
 int unpack_trees(unsigned n, struct tree_desc *t,
 		 struct unpack_trees_options *options);
 
+enum update_sparsity_result {
+	UPDATE_SPARSITY_SUCCESS = 0,
+	UPDATE_SPARSITY_WARNINGS = 1,
+	UPDATE_SPARSITY_INDEX_UPDATE_FAILURES = -1,
+	UPDATE_SPARSITY_WORKTREE_UPDATE_FAILURES = -2
+};
+
+enum update_sparsity_result update_sparsity(struct unpack_trees_options *options);
+
 int verify_uptodate(const struct cache_entry *ce,
 		    struct unpack_trees_options *o);