allow custom success msg via -d:nimHintSuccessX:"custom msg out: $out…

…put recompiled: $projectRecompiled"

compiler/commands.nim

@@ -432,6 +432,8 @@ proc processSwitch*(switch, arg: string, pass: TCmdLinePass, info: TLineInfo;
       splitSwitch(conf, arg, key, val, pass, info)
       if cmpIgnoreStyle(key, "nimQuirky") == 0:
         conf.exc = excQuirky
+      elif cmpIgnoreStyle(key, "nimHintSuccessX") == 0:
+        msgKindToStr[hintSuccessX] = val
       defineSymbol(conf.symbols, key, val)
     else:
       if cmpIgnoreStyle(arg, "nimQuirky") == 0:

compiler/lineinfos.nim

@@ -50,8 +50,8 @@ type
     hintUser, hintUserRaw,
     hintExtendedContext
 
-const
-  MsgKindToStr*: array[TMsgKind, string] = [
+var
+  msgKindToStr*: array[TMsgKind, string] = [
     errUnknown: "unknown error",
     errInternal: "internal error: $1",
     errIllFormedAstX: "illformed AST: $1",
@@ -98,7 +98,10 @@ const
     warnUser: "$1",
     hintSuccess: "operation successful: $#",
     # keep in sync with `testament.isSuccess`
-    hintSuccessX: "$loc LOC; $sec sec; $mem; $build build; proj: $project; out: $output recompiled: $projectRecompiled",
+    # can be overriden with -d:nimHintSuccessX:"custom msg; recompiled: $projectRecompiled"
+    # for the set of valid keys and details on formatting, see code near:
+    # `rawMessage(conf, hintSuccessX`
+    hintSuccessX: "$loc LOC; $sec sec; $mem; $build build; proj: $project; out: $output",
     hintCC: "CC: \'$1\'", # unused
     hintLineTooLong: "line too long",
     hintXDeclaredButNotUsed: "'$1' is declared but not used",

compiler/msgs.nim

@@ -325,7 +325,7 @@ proc coordToStr(coord: int): string =
 
 proc msgKindToString*(kind: TMsgKind): string =
   # later versions may provide translated error messages
-  result = MsgKindToStr[kind]
+  result = msgKindToStr[kind]
 
 proc getMessageStr(msg: TMsgKind, arg: string): string =
   result = msgKindToString(msg) % [arg]