From: Paul Eggert <eggert@cs.ucla.edu>
To: Ioannis Kappas <ioannis.kappas@gmail.com>, Eli Zaretskii <eliz@gnu.org>
Cc: 46388@debbugs.gnu.org
Subject: bug#46388: 27.1; emacs -batch does not output messages immediately when invoked outside of the command prompt
Date: Sun, 7 Mar 2021 20:05:06 -0800 [thread overview]
Message-ID: <68caa967-89b2-3c35-0d18-ac490a02383a@cs.ucla.edu> (raw)
In-Reply-To: <CAMRHuGBsq2rQG_8zrG5+OsHRwEMbR33xPq9qfq7L27d-9QpTjg@mail.gmail.com>
[-- Attachment #1: Type: text/plain, Size: 40 bytes --]
Wouldn't the attached be a simpler fix?
[-- Attachment #2: 0001-On-MS-Windows-fflush-stderr-after-newline.patch --]
[-- Type: text/x-patch, Size: 831 bytes --]
From ff81c979a9528af8065169f83a78de599e99177b Mon Sep 17 00:00:00 2001
From: Paul Eggert <eggert@cs.ucla.edu>
Date: Sun, 7 Mar 2021 20:01:37 -0800
Subject: [PATCH] On MS-Windows, fflush stderr after newline
Problem reported by Ioannis Kappas (Bug#46388).
* src/sysdep.c (errputc) [WINDOWSNT]: Flush stderr after newline.
---
src/sysdep.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/src/sysdep.c b/src/sysdep.c
index 941b4e2fa2..88dd3e71e4 100644
--- a/src/sysdep.c
+++ b/src/sysdep.c
@@ -2662,6 +2662,13 @@ errstream (void)
errputc (int c)
{
fputc_unlocked (c, errstream ());
+
+#ifdef WINDOWSNT
+ /* Flush stderr after outputting a newline since stderr is fully
+ buffered when redirected to a pipe, contrary to POSIX. */
+ if (c == '\n')
+ fflush_unlocked (stderr);
+#endif
}
void
--
2.29.2
next prev parent reply other threads:[~2021-03-08 4:05 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-08 21:20 bug#46388: 27.1; emacs -batch does not output messages immediately when invoked outside of the command prompt Ioannis Kappas
2021-02-08 21:42 ` Ioannis Kappas
2021-02-09 5:36 ` Eli Zaretskii
2021-02-09 20:15 ` Ioannis Kappas
2021-02-09 20:52 ` Eli Zaretskii
2021-02-09 21:14 ` Eli Zaretskii
[not found] ` <CAMRHuGC_p59uw_hmCL65Z0F1ZdFbVAf9MHcB-sX88bW6jchC-Q@mail.gmail.com>
2021-02-10 12:48 ` Ioannis Kappas
2021-02-10 15:57 ` Eli Zaretskii
2021-02-11 8:10 ` Ioannis Kappas
2021-02-11 14:09 ` Eli Zaretskii
2021-02-11 19:25 ` Ioannis Kappas
2021-02-11 19:55 ` Eli Zaretskii
2021-02-12 19:59 ` Ioannis Kappas
2021-02-12 20:03 ` Eli Zaretskii
2021-03-06 15:00 ` Ioannis Kappas
2021-03-08 4:05 ` Paul Eggert [this message]
2021-03-08 7:56 ` Ioannis Kappas
2021-03-11 14:27 ` Eli Zaretskii
2021-03-11 18:43 ` Paul Eggert
2021-02-11 21:15 ` Paul Eggert
2021-02-09 3:38 ` Eli Zaretskii
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