use instead getConfigVar, ie: --msgs.hintSuccessX:customMsg

compiler/commands.nim

@@ -436,8 +436,6 @@ 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
 
-var
-  msgKindToStr*: array[TMsgKind, string] = [
+const
+  MsgKindToStr*: array[TMsgKind, string] = [
     errUnknown: "unknown error",
     errInternal: "internal error: $1",
     errIllFormedAstX: "illformed AST: $1",
@@ -97,11 +97,7 @@ var
     warnCycleCreated: "$1",
     warnUser: "$1",
     hintSuccess: "operation successful: $#",
-    # keep in sync with `testament.isSuccess`
-    # 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",
+    hintSuccessX: "$1", # keep in sync with `testament.isSuccess`
     hintCC: "CC: $1",
     hintLineTooLong: "line too long",
     hintXDeclaredButNotUsed: "'$1' is declared but not used",

compiler/main.nim

@@ -373,7 +373,11 @@ proc mainCommand*(graph: ModuleGraph) =
     let project = if optListFullPaths in conf.globalOptions: $conf.projectFull else: $conf.projectName
     var output = $conf.absOutFile
     if optListFullPaths notin conf.globalOptions: output = output.AbsoluteFile.extractFilename
-    rawMessage(conf, hintSuccessX, [
+
+    let fmtDefault = "$loc LOC; $sec sec; $mem; $build build; proj: $project; out: $output"
+    # can be overriden to format differently/show additional fields
+    let msg = getConfigVar(conf, "msgs.hintSuccessX", fmtDefault)
+    rawMessage(conf, hintSuccessX, msg % [
       "loc", loc,
       "sec", sec,
       "mem", mem,

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]