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bug#11933: ambiguous "stty --help" text

From: Bruno Haible
Subject: bug#11933: ambiguous "stty --help" text
Date: Fri, 13 Jul 2012 15:53:14 +0200
User-agent: KMail/4.7.4 (Linux/3.1.10-1.9-desktop; KDE/4.7.4; x86_64; ; )

Hi coreutils maintainers,

"stty --help" produces the output

   [-]parodd     set odd parity (even with `-')

When looking at the code and "man termios", which says:

       PARODD If set, then parity for input and output is odd; otherwise
              even parity is used.

it is clear that option '-parodd' means the opposite of option 'parodd'.
But the German translator misunderstood this line twice (even after being
pointed to the fact that it's ambiguous), as if it was

   [-]parodd     set odd parity (believe it or not, also with `-')

Can this ambiguity please be fixed at the root, in the English source
code? Here is a proposed patch (apply with "patch -p0"):

2012-07-13  Bruno Haible  <address@hidden>

        stty: Clarify meaning of '-parodd'.
        * src/stty.c (usage): Disambiguate explanation of -parodd.
        Reported by Michael Stummvoll <address@hidden>.

--- src/stty.c.orig     Fri Jul 13 15:44:17 2012
+++ src/stty.c  Fri Jul 13 15:40:47 2012
@@ -583,7 +583,7 @@
    [-]hup        send a hangup signal when the last process closes the tty\n\
    [-]hupcl      same as [-]hup\n\
    [-]parenb     generate parity bit in output and expect parity bit in 
-   [-]parodd     set odd parity (even with '-')\n\
+   [-]parodd     set odd parity (or even parity with '-')\n\
 "), stdout);
       fputs (_("\

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