compile time echo steals newline from stderr so it's included in stdout instead #16334
Description
Example
Say we have this program saved as test.nim
static:
echo "test"
proc abc(x: float) =
discard
proc abc(x: int) =
discard
abc("test")And we inspect stdout and stderr using this program (if you're a command line wiz you could probably do that simpler):
import osproc, streams
let process = startProcess("nim", args = ["check", "test.nim"], options = {poUsePath})
discard process.waitForExit()
echo "std out:"
echo process.outputStream().readAll()
echo "std err:"
echo process.errorStream().readAll()Current Output
std out:
test
std err:
Hint: used config file 'C:\Nim\config\nim.cfg' [Conf]
Hint: used config file 'C:\Nim\config\config.nims' [Conf]
.....C:\Users\Kemal\Desktop\neuerordner\test.nim(22, 4) Error: type mismatch: got <string>
but expected one of:
proc abc(x: float)
first type mismatch at position: 1
required type for x: float
but expression '"test"' is of type: string
proc abc(x: int)
first type mismatch at position: 1
required type for x: int
but expression '"test"' is of type: string
expression: abc("test")
C:\Users\Kemal\Desktop\neuerordner\test.nim(5, 6) Hint: 'y' is declared but not used [XDeclaredButNotUsed]
C:\Users\Kemal\Desktop\neuerordner\test.nim(19, 6) Hint: 'abc' is declared but not used [XDeclaredButNotUsed]
C:\Users\Kemal\Desktop\neuerordner\test.nim(17, 6) Hint: 'abc' is declared but not used [XDeclaredButNotUsed]
C:\Users\Kemal\Desktop\neuerordner\test.nim(1, 8) Warning: imported and not used: 'macros' [UnusedImport]
there's no newline between the dots and the path. But an additional one in stdout.
If the echo is removed this is the output:
std out:
std err:
Hint: used config file 'C:\Nim\config\nim.cfg' [Conf]
Hint: used config file 'C:\Nim\config\config.nims' [Conf]
.....
C:\Users\Kemal\Desktop\neuerordner\test.nim(20, 4) Error: type mismatch: got <string>
but expected one of:
proc abc(x: float)
first type mismatch at position: 1
required type for x: float
but expression '"test"' is of type: string
proc abc(x: int)
first type mismatch at position: 1
required type for x: int
but expression '"test"' is of type: string
expression: abc("test")
C:\Users\Kemal\Desktop\neuerordner\test.nim(3, 6) Hint: 'y' is declared but not used [XDeclaredButNotUsed]
C:\Users\Kemal\Desktop\neuerordner\test.nim(17, 6) Hint: 'abc' is declared but not used [XDeclaredButNotUsed]
C:\Users\Kemal\Desktop\neuerordner\test.nim(15, 6) Hint: 'abc' is declared but not used [XDeclaredButNotUsed]
C:\Users\Kemal\Desktop\neuerordner\test.nim(1, 8) Warning: imported and not used: 'macros' [UnusedImport]
Additional Information
nim -v
Nim Compiler Version 1.5.1 [Windows: amd64]
Compiled at 2020-12-12
Copyright (c) 2006-2020 by Andreas Rumpf
git hash: d15f63a0f2d431a516601530196ac01c26e00f53
active boot switches: -d:release