fix `hintProcessing` dots interference with `static:echo` and `hintCC`; add tests for `nim secret`, add tests for hintProcessing, misc other bug fixes (#16495)

* fix dots interfering with static:echo
* add tests
* fix hintProcessing dots for hintCC
* improve trunner tests
* fix bug: readLineFromStdin now writes prompt to stdout, consistent with linenoise and rdstdin
* disable a failing test for windows

6 files changed, 21 insertions, 13 deletions

diff --git a/compiler/extccomp.nim b/compiler/extccomp.nim
index e37e867da..14b961ee1 100644
--- a/compiler/extccomp.nim
+++ b/compiler/extccomp.nim
@@ -848,7 +848,10 @@ proc callCCompiler*(conf: ConfigRef) =
   var cmds: TStringSeq
   var prettyCmds: TStringSeq
   let prettyCb = proc (idx: int) =
-    if prettyCmds[idx].len > 0: echo prettyCmds[idx]
+    if prettyCmds[idx].len > 0:
+      flushDot(conf)
+      # xxx should probably use stderr like other compiler messages, not stdout
+      echo prettyCmds[idx]
 
   for idx, it in conf.toCompile:
     # call the C compiler for the .c file:
diff --git a/compiler/llstream.nim b/compiler/llstream.nim
index b768e6c83..bfc377a16 100644
--- a/compiler/llstream.nim
+++ b/compiler/llstream.nim
@@ -75,10 +75,10 @@ proc llStreamClose*(s: PLLStream) =
 when not declared(readLineFromStdin):
   # fallback implementation:
   proc readLineFromStdin(prompt: string, line: var string): bool =
-    stderr.write(prompt)
+    stdout.write(prompt)
     result = readLine(stdin, line)
     if not result:
-      stderr.write("\n")
+      stdout.write("\n")
       quit(0)
 
 proc endsWith*(x: string, s: set[char]): bool =
diff --git a/compiler/main.nim b/compiler/main.nim
index 74c19bf10..c94c4323f 100644
--- a/compiler/main.nim
+++ b/compiler/main.nim
@@ -138,7 +138,7 @@ proc commandInteractive(graph: ModuleGraph) =
     var m = graph.makeStdinModule()
     incl(m.flags, sfMainModule)
     var idgen = IdGenerator(module: m.itemId.module, item: m.itemId.item)
-    let s = llStreamOpenStdIn(onPrompt = proc() = flushDot(graph.config, stderr))
+    let s = llStreamOpenStdIn(onPrompt = proc() = flushDot(graph.config))
     processModule(graph, m, idgen, s)
 
 proc commandScan(cache: IdentCache, config: ConfigRef) =
diff --git a/compiler/msgs.nim b/compiler/msgs.nim
index 6d6e21204..afb51da09 100644
--- a/compiler/msgs.nim
+++ b/compiler/msgs.nim
@@ -19,8 +19,10 @@ template instLoc(): InstantiationInfo = instantiationInfo(-2, fullPaths = true)
 template toStdOrrKind(stdOrr): untyped =
   if stdOrr == stdout: stdOrrStdout else: stdOrrStderr
 
-template flushDot*(conf, stdOrr) =
+proc flushDot*(conf: ConfigRef) =
   ## safe to call multiple times
+  # xxx one edge case not yet handled is when `printf` is called at CT with `compiletimeFFI`.
+  let stdOrr = if optStdout in conf.globalOptions: stdout else: stderr
   let stdOrrKind = toStdOrrKind(stdOrr)
   if stdOrrKind in conf.lastMsgWasDot:
     conf.lastMsgWasDot.excl stdOrrKind
@@ -311,12 +313,12 @@ proc msgWriteln*(conf: ConfigRef; s: string, flags: MsgFlags = {}) =
     conf.writelnHook(s)
   elif optStdout in conf.globalOptions or msgStdout in flags:
     if eStdOut in conf.m.errorOutputs:
-      flushDot(conf, stdout)
+      flushDot(conf)
       writeLine(stdout, s)
       flushFile(stdout)
   else:
     if eStdErr in conf.m.errorOutputs:
-      flushDot(conf, stderr)
+      flushDot(conf)
       writeLine(stderr, s)
       # On Windows stderr is fully-buffered when piped, regardless of C std.
       when defined(windows):
@@ -368,11 +370,11 @@ template styledMsgWriteln*(args: varargs[typed]) =
     callIgnoringStyle(callWritelnHook, nil, args)
   elif optStdout in conf.globalOptions:
     if eStdOut in conf.m.errorOutputs:
-      flushDot(conf, stdout)
+      flushDot(conf)
       callIgnoringStyle(writeLine, stdout, args)
       flushFile(stdout)
   elif eStdErr in conf.m.errorOutputs:
-    flushDot(conf, stderr)
+    flushDot(conf)
     if optUseColors in conf.globalOptions:
       callStyledWriteLineStderr(args)
     else:
diff --git a/compiler/options.nim b/compiler/options.nim
index 87796539c..1de6d531a 100644
--- a/compiler/options.nim
+++ b/compiler/options.nim
@@ -368,8 +368,11 @@ proc setNote*(conf: ConfigRef, note: TNoteKind, enabled = true) =
     if enabled: incl(conf.notes, note) else: excl(conf.notes, note)
 
 proc hasHint*(conf: ConfigRef, note: TNoteKind): bool =
+  # ternary states instead of binary states would simplify logic
   if optHints notin conf.options: false
-  elif note in {hintConf}: # could add here other special notes like hintSource
+  elif note in {hintConf, hintProcessing}:
+    # could add here other special notes like hintSource
+    # these notes apply globally.
     note in conf.mainPackageNotes
   else: note in conf.notes
 
diff --git a/compiler/vm.nim b/compiler/vm.nim
index 34d76f21e..1004826ea 100644
--- a/compiler/vm.nim
+++ b/compiler/vm.nim
@@ -1153,14 +1153,14 @@ proc rawExecute(c: PCtx, start: int, tos: PStackFrame): TFullReg =
         stackTrace(c, tos, pc, "node is not a proc symbol")
     of opcEcho:
       let rb = instr.regB
-      if rb == 1:
-        msgWriteln(c.config, regs[ra].node.strVal, {msgStdout})
+      template fn(s) = msgWriteln(c.config, s, {msgStdout})
+      if rb == 1: fn(regs[ra].node.strVal)
       else:
         var outp = ""
         for i in ra..ra+rb-1:
           #if regs[i].kind != rkNode: debug regs[i]
           outp.add(regs[i].node.strVal)
-        msgWriteln(c.config, outp, {msgStdout})
+        fn(outp)
     of opcContainsSet:
       decodeBC(rkInt)
       regs[ra].intVal = ord(inSet(regs[rb].node, regs[rc].regToNode))