Index: trunk/src/libcschem/hierarchy.c
===================================================================
--- trunk/src/libcschem/hierarchy.c	(revision 10242)
+++ trunk/src/libcschem/hierarchy.c	(revision 10243)
@@ -30,6 +30,9 @@
 
 #include <librnd/core/error.h>
 #include <librnd/core/compat_misc.h>
+#include <librnd/core/compat_fs.h>
+#include <librnd/core/compat_lrealpath.h>
+#include <librnd/core/misc_util.h>
 #include <genht/hash.h>
 
 #include "concrete.h"
@@ -159,9 +162,35 @@
 
 csch_sheet_t *csch_hier_find_by_path(const csch_sheet_t *sheet, const char *path, int add_to_prj_as_aux)
 {
-	rnd_message(RND_MSG_ERROR, "cschem/child/path not yet implemented");
-	TODO("hierarchical: implement me\n");
-	return NULL;
+	csch_project_t *prj = (csch_project_t *)sheet->hidlib.project;
+	csch_sheet_t *res;
+	char *dirname, *new_path, *nr_path;
+	long n;
+
+	/* refuse invalid and absolute path */
+	if ((path == NULL) || (path[0] == '/'))
+		return NULL;
+
+	dirname = rnd_dirname_real(sheet->hidlib.fullpath);
+	new_path = rnd_concat(dirname, "/", path, NULL);
+	free(dirname);
+	nr_path = rnd_lrealpath(new_path);
+	free(new_path);
+
+	/* search in project first */
+	for(n = 0; n < prj->hdr.designs.used; n++) {
+		csch_sheet_t *sh = prj->hdr.designs.array[n];
+		if (strcmp(sh->hidlib.fullpath, nr_path) == 0) {
+			res = sh;
+			goto done;
+		}
+	}
+
+	res = csch_app_load_sheet_cb(prj, nr_path);
+
+	done:;
+	free(nr_path);
+	return res;
 }
 
 RND_INLINE const char *get_sym_attr(csch_cgrp_t *sym, const char *key)