Now the compiler maintains more precise information for the source locations of the different definitions. There is a --tags option which generates a list of all identifiers with their source locations.

src/compiler/GF/Infra/Option.hs

@@ -74,7 +74,7 @@ errors = fail . unlines
 -- Types
 
 data Mode = ModeVersion | ModeHelp | ModeInteractive | ModeRun | ModeCompiler
-          | ModeServer
+          | ModeServer | ModeTags
   deriving (Show,Eq,Ord)
 
 data Verbosity = Quiet | Normal | Verbose | Debug
@@ -299,6 +299,7 @@ optDescr =
      Option [] ["interactive"] (NoArg (mode ModeInteractive)) "Run in interactive mode (default).",
      Option [] ["run"] (NoArg (mode ModeRun)) "Run in interactive mode, showing output only (no other messages).",
      Option [] ["server"] (NoArg (mode ModeServer)) "Run in HTTP server mode.",
+     Option [] ["tags"] (NoArg (mode ModeTags)) "Build TAGS file and exit.",
      Option ['E'] [] (NoArg (phase Preproc)) "Stop after preprocessing (with --preproc).",
      Option ['C'] [] (NoArg (phase Convert)) "Stop after conversion to .gf.",
      Option ['c'] [] (NoArg (phase Compile)) "Stop after compiling to .gfo (default) .",