Index: trunk/src/sch-rnd/file_act.c
===================================================================
--- trunk/src/sch-rnd/file_act.c	(revision 10227)
+++ trunk/src/sch-rnd/file_act.c	(revision 10228)
@@ -104,7 +104,20 @@
 	return 0;
 }
 
+static const char csch_acts_HlibraryRehash[] = "HlibraryRehash()";
+static const char csch_acth_HlibraryRehash[] = "Rebuild the in-memory tree of hierarchic sheet libraries";
+static fgw_error_t csch_act_HlibraryRehash(fgw_arg_t *res, int argc, fgw_arg_t *argv)
+{
+	csch_sheet_t *sheet = CSCH_ACT_SHEET;
+	csch_lib_master_t *master = csch_lib_get_master("hlibrary", 1);
 
+	csch_lib_clear_sheet_lib(sheet, master->uid);
+	csch_lib_add_all(sheet, master, &conf_core.rc.library_search_paths, 1);
+	rnd_event(&sheet->hidlib, CSCH_EVENT_LIBRARY_CHANGED, NULL);
+	RND_ACT_IRES(0);
+	return 0;
+}
+
 static const char csch_acts_Revert[] = "Revert([sheet|project])";
 static const char csch_acth_Revert[] = "Revert to on-disk version of file(s). Default target is sheet.";
 fgw_error_t csch_act_Revert(fgw_arg_t *res, int argc, fgw_arg_t *argv)
@@ -573,6 +586,7 @@
 	{"Quit", csch_act_Quit, csch_acth_Quit, csch_acts_Quit},
 	{"SymlibRehash", csch_act_SymlibRehash, csch_acth_SymlibRehash, csch_acts_SymlibRehash},
 	{"SymlibReloadAllLocal", csch_act_SymlibReloadAllLocal, csch_acth_SymlibReloadAllLocal, csch_acts_SymlibReloadAllLocal},
+	{"HlibraryRehash", csch_act_HlibraryRehash, csch_acth_HlibraryRehash, csch_acts_HlibraryRehash},
 	{"Revert", csch_act_Revert, csch_acth_Revert, csch_acts_Revert},
 	{"New", csch_act_New, csch_acth_New, csch_acts_New},
 	{"Export", rnd_act_Export, rnd_acth_Export, rnd_acts_Export},