1 files changed, 15 insertions, 1 deletions
diff --git a/lib/system/sysio.nim b/lib/system/sysio.nim
index 4f266e0ae..4348ffbb5 100644
--- a/lib/system/sysio.nim
+++ b/lib/system/sysio.nim
@@ -192,7 +192,7 @@ proc write(f: File, r: float32) =
 proc write(f: File, r: BiggestFloat) =
   if c_fprintf(f, "%g", r) < 0: checkErr(f)
 
-proc write(f: File, c: char) = discard c_putc(ord(c), f)
+proc write(f: File, c: char) = discard c_putc(cint(c), f)
 proc write(f: File, a: varargs[string, `$`]) =
   for x in items(a): write(f, x)
 
@@ -404,4 +404,18 @@ proc setStdIoUnbuffered() =
   when declared(stdin):
     discard c_setvbuf(stdin, nil, IONBF, 0)
 
+when declared(stdout):
+  proc echoBinSafe(args: openArray[string]) {.compilerProc.} =
+    when not defined(windows):
+      proc flockfile(f: File) {.importc, noDecl.}
+      proc funlockfile(f: File) {.importc, noDecl.}
+      flockfile(stdout)
+    for s in args:
+      discard c_fwrite(s.cstring, s.len, 1, stdout)
+    const linefeed = "\n" # can be 1 or more chars
+    discard c_fwrite(linefeed.cstring, linefeed.len, 1, stdout)
+    discard c_fflush(stdout)
+    when not defined(windows):
+      funlockfile(stdout)
+
 {.pop.}