Make stripAnsi GC-safe.

cliutils.nim

@@ -101,7 +101,7 @@ proc execWithOutput*(command: string, workingDir:string = "",
   result = (TaintedString"", TaintedString"", -1)
   var outSeq, errSeq: seq[TaintedString]
   outSeq = @[]; errSeq = @[]
-  var outputCollector = combineProcMsgHandlers(msgCB,
+  let outputCollector = combineProcMsgHandlers(msgCB,
     proc(outMsg, errMsg: TaintedString, cmd: string): void {.closure.} =
       if outMsg.len > 0: outSeq.add(outMsg)
       if errMsg.len > 0: errSeq.add(errMsg))
@@ -187,9 +187,10 @@ proc termColor*(color: TermColor, bright, bold = false): string =
 proc withColor*(str: string, color: TermColor, bright, bold = false): string =
   return termColor(color, bright, bold) & str
 
-let STRIP_ANSI_REGEX = re"\x1B\[([0-9]{1,2}(;[0-9]{1,2})?)?[m|K]"
 
-proc stripAnsi*(str: string): string = return str.replace(STRIP_ANSI_REGEX, "")
+proc stripAnsi*(str: string): string =
+  let STRIP_ANSI_REGEX = re"\x1B\[([0-9]{1,2}(;[0-9]{1,2})?)?[m|K]"
+  return str.replace(STRIP_ANSI_REGEX, "")
 
 proc queryParamsToCliArgs*(queryParams: Table[string, string]): seq[string] =
   result = @[]