introduce --oldgensym:on rather than --useVersion

1 files changed, 3 insertions, 3 deletions

diff --git a/compiler/commands.nim b/compiler/commands.nim
index 1123996c1..386b29f8f 100644
--- a/compiler/commands.nim
+++ b/compiler/commands.nim
@@ -783,15 +783,15 @@ proc processSwitch*(switch, arg: string, pass: TCmdLinePass, info: TLineInfo;
   of "expandmacro":
     expectArg(conf, switch, arg, pass, info)
     conf.macrosToExpand[arg] = "T"
+  of "oldgensym":
+    processOnOffSwitchG(conf, {optNimV019}, arg, pass, info)
   of "useversion":
     expectArg(conf, switch, arg, pass, info)
     case arg
-    of "0.19":
-      conf.globalOptions.incl optNimV019
     of "1.0":
       discard "the default"
     else:
-      localError(conf, info, "unknown Nim version; currently supported values are: {0.19, 1.0}")
+      localError(conf, info, "unknown Nim version; currently supported values are: {1.0}")
   of "":
     conf.projectName = "-"
   else: