Only apply IndexDiffFilter when scanning directories

When getStatus() is called with specific files rather than directories,
tests expect those files to be present in the result even when clean
(all-NORMAL status). IndexDiffFilter filters out clean entries entirely,
breaking that contract.

Restrict IndexDiffFilter to directory-only scans. This pleases the tests but still applies the optimization in the Commit dilog, which calls getStatus() on a directory with potentially many files.

A better approach would be to preload file status and parallelize computing hashes with fti.isModified(indexEntry, true,...), so that it doesn't block main thread. This, however, requires a lot of refactoring, so let's try a simple approach first.

Author: OndroMih

ide/libs.git/src/org/netbeans/libs/git/jgit/commands/StatusCommand.java

@@ -135,10 +135,19 @@ protected void run () throws GitException {
                 final int T_WORKSPACE = 2;
                 // IndexDiffFilter skips files where HEAD==index and working tree
                 // is unmodified (avoiding content hashing for clean files).
-                // Combine with path filters when present.
-                TreeFilter diffFilter = new IndexDiffFilter(T_INDEX, T_WORKSPACE, true);
-                if (!pathFilters.isEmpty()) {
-                    diffFilter = AndTreeFilter.create(PathFilterGroup.create(pathFilters), diffFilter);
+                // Only apply when all roots are directories: callers that pass
+                // specific files expect those files in the result even when clean.
+                boolean allRootsAreDirs = Arrays.stream(roots).allMatch(File::isDirectory);
+                TreeFilter diffFilter;
+                if (allRootsAreDirs) {
+                    diffFilter = new IndexDiffFilter(T_INDEX, T_WORKSPACE, true);
+                    if (!pathFilters.isEmpty()) {
+                        diffFilter = AndTreeFilter.create(PathFilterGroup.create(pathFilters), diffFilter);
+                    }
+                } else if (!pathFilters.isEmpty()) {
+                    diffFilter = PathFilterGroup.create(pathFilters);
+                } else {
+                    diffFilter = TreeFilter.ALL;
                 }
                 treeWalk.setFilter(diffFilter);
                 String lastPath = null;