Merge branch 'mt/add-rm-in-sparse-checkout'

"git add" and "git rm" learned not to touch those paths that are
outside of sparse checkout.

* mt/add-rm-in-sparse-checkout:
  rm: honor sparse checkout patterns
  add: warn when asked to update SKIP_WORKTREE entries
  refresh_index(): add flag to ignore SKIP_WORKTREE entries
  pathspec: allow to ignore SKIP_WORKTREE entries on index matching
  add: make --chmod and --renormalize honor sparse checkouts
  t3705: add tests for `git add` in sparse checkouts
  add: include magic part of pathspec on --refresh error

3 files changed, 89 insertions, 26 deletions

diff --git a/builtin/add.c b/builtin/add.c
index afccf2fd55..58ee3f954e 100644
--- a/builtin/add.c
+++ b/builtin/add.c
@@ -46,6 +46,9 @@ static int chmod_pathspec(struct pathspec *pathspec, char flip, int show_only)
 		struct cache_entry *ce = active_cache[i];
 		int err;
 
+		if (ce_skip_worktree(ce))
+			continue;
+
 		if (pathspec && !ce_path_match(&the_index, ce, pathspec, NULL))
 			continue;
 
@@ -146,6 +149,8 @@ static int renormalize_tracked_files(const struct pathspec *pathspec, int flags)
 	for (i = 0; i < active_nr; i++) {
 		struct cache_entry *ce = active_cache[i];
 
+		if (ce_skip_worktree(ce))
+			continue;
 		if (ce_stage(ce))
 			continue; /* do not touch unmerged paths */
 		if (!S_ISREG(ce->ce_mode) && !S_ISLNK(ce->ce_mode))
@@ -174,24 +179,44 @@ static char *prune_directory(struct dir_struct *dir, struct pathspec *pathspec,
 			*dst++ = entry;
 	}
 	dir->nr = dst - dir->entries;
-	add_pathspec_matches_against_index(pathspec, &the_index, seen);
+	add_pathspec_matches_against_index(pathspec, &the_index, seen,
+					   PS_IGNORE_SKIP_WORKTREE);
 	return seen;
 }
 
-static void refresh(int verbose, const struct pathspec *pathspec)
+static int refresh(int verbose, const struct pathspec *pathspec)
 {
 	char *seen;
-	int i;
+	int i, ret = 0;
+	char *skip_worktree_seen = NULL;
+	struct string_list only_match_skip_worktree = STRING_LIST_INIT_NODUP;
+	int flags = REFRESH_IGNORE_SKIP_WORKTREE |
+		    (verbose ? REFRESH_IN_PORCELAIN : REFRESH_QUIET);
 
 	seen = xcalloc(pathspec->nr, 1);
-	refresh_index(&the_index, verbose ? REFRESH_IN_PORCELAIN : REFRESH_QUIET,
-		      pathspec, seen, _("Unstaged changes after refreshing the index:"));
+	refresh_index(&the_index, flags, pathspec, seen,
+		      _("Unstaged changes after refreshing the index:"));
 	for (i = 0; i < pathspec->nr; i++) {
-		if (!seen[i])
-			die(_("pathspec '%s' did not match any files"),
-			    pathspec->items[i].match);
+		if (!seen[i]) {
+			if (matches_skip_worktree(pathspec, i, &skip_worktree_seen)) {
+				string_list_append(&only_match_skip_worktree,
+						   pathspec->items[i].original);
+			} else {
+				die(_("pathspec '%s' did not match any files"),
+				    pathspec->items[i].original);
+			}
+		}
+	}
+
+	if (only_match_skip_worktree.nr) {
+		advise_on_updating_sparse_paths(&only_match_skip_worktree);
+		ret = 1;
 	}
+
 	free(seen);
+	free(skip_worktree_seen);
+	string_list_clear(&only_match_skip_worktree, 0);
+	return ret;
 }
 
 int run_add_interactive(const char *revision, const char *patch_mode,
@@ -567,15 +592,18 @@ int cmd_add(int argc, const char **argv, const char *prefix)
 	}
 
 	if (refresh_only) {
-		refresh(verbose, &pathspec);
+		exit_status |= refresh(verbose, &pathspec);
 		goto finish;
 	}
 
 	if (pathspec.nr) {
 		int i;
+		char *skip_worktree_seen = NULL;
+		struct string_list only_match_skip_worktree = STRING_LIST_INIT_NODUP;
 
 		if (!seen)
-			seen = find_pathspecs_matching_against_index(&pathspec, &the_index);
+			seen = find_pathspecs_matching_against_index(&pathspec,
+					&the_index, PS_IGNORE_SKIP_WORKTREE);
 
 		/*
 		 * file_exists() assumes exact match
@@ -589,12 +617,24 @@ int cmd_add(int argc, const char **argv, const char *prefix)
 
 		for (i = 0; i < pathspec.nr; i++) {
 			const char *path = pathspec.items[i].match;
+
 			if (pathspec.items[i].magic & PATHSPEC_EXCLUDE)
 				continue;
-			if (!seen[i] && path[0] &&
-			    ((pathspec.items[i].magic &
-			      (PATHSPEC_GLOB | PATHSPEC_ICASE)) ||
-			     !file_exists(path))) {
+			if (seen[i])
+				continue;
+
+			if (matches_skip_worktree(&pathspec, i, &skip_worktree_seen)) {
+				string_list_append(&only_match_skip_worktree,
+						   pathspec.items[i].original);
+				continue;
+			}
+
+			/* Don't complain at 'git add .' on empty repo */
+			if (!path[0])
+				continue;
+
+			if ((pathspec.items[i].magic & (PATHSPEC_GLOB | PATHSPEC_ICASE)) ||
+			    !file_exists(path)) {
 				if (ignore_missing) {
 					int dtype = DT_UNKNOWN;
 					if (is_excluded(&dir, &the_index, path, &dtype))
@@ -605,7 +645,16 @@ int cmd_add(int argc, const char **argv, const char *prefix)
 					    pathspec.items[i].original);
 			}
 		}
+
+
+		if (only_match_skip_worktree.nr) {
+			advise_on_updating_sparse_paths(&only_match_skip_worktree);
+			exit_status = 1;
+		}
+
 		free(seen);
+		free(skip_worktree_seen);
+		string_list_clear(&only_match_skip_worktree, 0);
 	}
 
 	plug_bulk_checkin();
diff --git a/builtin/check-ignore.c b/builtin/check-ignore.c
index 3c652748d5..0f4480a11b 100644
--- a/builtin/check-ignore.c
+++ b/builtin/check-ignore.c
@@ -100,7 +100,8 @@ static int check_ignore(struct dir_struct *dir,
 	 * should not be ignored, in order to be consistent with
 	 * 'git status', 'git add' etc.
 	 */
-	seen = find_pathspecs_matching_against_index(&pathspec, &the_index);
+	seen = find_pathspecs_matching_against_index(&pathspec, &the_index,
+						     PS_HEED_SKIP_WORKTREE);
 	for (i = 0; i < pathspec.nr; i++) {
 		full_path = pathspec.items[i].match;
 		pattern = NULL;
diff --git a/builtin/rm.c b/builtin/rm.c
index 5559a0b453..d89f241e97 100644
--- a/builtin/rm.c
+++ b/builtin/rm.c
@@ -5,6 +5,7 @@
  */
 #define USE_THE_INDEX_COMPATIBILITY_MACROS
 #include "builtin.h"
+#include "advice.h"
 #include "config.h"
 #include "lockfile.h"
 #include "dir.h"
@@ -254,7 +255,7 @@ static struct option builtin_rm_options[] = {
 int cmd_rm(int argc, const char **argv, const char *prefix)
 {
 	struct lock_file lock_file = LOCK_INIT;
-	int i;
+	int i, ret = 0;
 	struct pathspec pathspec;
 	char *seen;
 
@@ -297,6 +298,8 @@ int cmd_rm(int argc, const char **argv, const char *prefix)
 	ensure_full_index(&the_index);
 	for (i = 0; i < active_nr; i++) {
 		const struct cache_entry *ce = active_cache[i];
+		if (ce_skip_worktree(ce))
+			continue;
 		if (!ce_path_match(&the_index, ce, &pathspec, seen))
 			continue;
 		ALLOC_GROW(list.entry, list.nr + 1, list.alloc);
@@ -310,24 +313,34 @@ int cmd_rm(int argc, const char **argv, const char *prefix)
 	if (pathspec.nr) {
 		const char *original;
 		int seen_any = 0;
+		char *skip_worktree_seen = NULL;
+		struct string_list only_match_skip_worktree = STRING_LIST_INIT_NODUP;
+
 		for (i = 0; i < pathspec.nr; i++) {
 			original = pathspec.items[i].original;
-			if (!seen[i]) {
-				if (!ignore_unmatch) {
-					die(_("pathspec '%s' did not match any files"),
-					    original);
-				}
-			}
-			else {
+			if (seen[i])
 				seen_any = 1;
-			}
+			else if (ignore_unmatch)
+				continue;
+			else if (matches_skip_worktree(&pathspec, i, &skip_worktree_seen))
+				string_list_append(&only_match_skip_worktree, original);
+			else
+				die(_("pathspec '%s' did not match any files"), original);
+
 			if (!recursive && seen[i] == MATCHED_RECURSIVELY)
 				die(_("not removing '%s' recursively without -r"),
 				    *original ? original : ".");
 		}
 
+		if (only_match_skip_worktree.nr) {
+			advise_on_updating_sparse_paths(&only_match_skip_worktree);
+			ret = 1;
+		}
+		free(skip_worktree_seen);
+		string_list_clear(&only_match_skip_worktree, 0);
+
 		if (!seen_any)
-			exit(0);
+			exit(ret);
 	}
 
 	if (!index_only)
@@ -407,5 +420,5 @@ int cmd_rm(int argc, const char **argv, const char *prefix)
 			       COMMIT_LOCK | SKIP_IF_UNCHANGED))
 		die(_("Unable to write new index file"));
 
-	return 0;
+	return ret;
 }