rcldb::getSubDocs() (called from GUI show subdocs) was returning too many results because the parent/child ipath test was flawed

src/internfile/internfile.cpp

@@ -102,6 +102,12 @@ string FileInterner::getLastIpathElt(const string& ipath)
     }
 }
 
+bool FileInterner::ipathContains(const string& parent, const string& child)
+{
+    return child.find(parent) == 0 &&
+        child.find(cstr_isep, parent.size()) == parent.size();
+}
+
 // Constructor: identify the input file, possibly create an
 // uncompressed temporary copy, and create the top filter for the
 // uncompressed file type.

src/internfile/internfile.h

@@ -206,6 +206,9 @@ class FileInterner {
     /** Return last element in ipath, like basename */
     static std::string getLastIpathElt(const std::string& ipath);
 
+    /** Check that 2nd param is child of first */
+    static bool ipathContains(const std::string& parent,
+                              const std::string& child);
     /** 
      * Build sig for doc coming from rcldb. This is here because we know how
      * to query the right backend. Used to check up-to-dateness at query time */