M minpkg/core/shell.nim → minpkg/core/shell.nim

@@ -7,6 +7,7 @@ critbits,
     algorithm,
     streams,
     terminal,
+    exitprocs,
     json,
     os
   ]
@@ -25,7 +26,16 @@ minline
 
 var SIMPLEREPL* = false
 
+var SUCCESS* = false
+
+proc showUnhandledExceptionMessage =
+  if not SUCCESS:
+    stderr.writeLine "=> Please re-run this program in development mode (specify -d) for debugging information on this error."
+
+addExitProc(showUnhandledExceptionMessage)
+
 proc interpret*(i: In, s: string): MinValue =
+  SUCCESS = false
   i.open(newStringStream(s), i.filename)
   discard i.parser.getToken()
   try:
@@ -33,6 +43,8 @@ result = i.interpret()
   except CatchableError:
     discard
     i.close()
+  finally: 
+    SUCCESS = true
 
 proc getCompletions*(ed: LineEditor, i: MinInterpreter): seq[string] =
   let symbols = toSeq(i.scope.symbols.keys)