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List: busybox
Subject: Re: [PATCH] ed: fix current line number for file passed via the command-line
From: Denys Vlasenko <vda.linux () googlemail ! com>
Date: 2021-12-19 22:16:37
Message-ID: CAK1hOcM9R5Qnvx3x3A=ZHSBBW=n_t6WwoS=ovAaBgCfNSP9q_w () mail ! gmail ! com
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Applied, thanks
On Wed, Nov 17, 2021 at 3:16 PM <soeren@soeren-tempel.net> wrote:
>
> From: Sören Tempel <soeren+git@soeren-tempel.net>
>
> POSIX.1-2008 mandates the following regarding the file command-line
> argument:
>
> If the file argument is given, ed shall simulate an e command
> on the file named by the pathname […]
>
> The specification for the e command mandates the following behaviour
> regarding the current line number in POSIX.1-2008:
>
> The current line number shall be set to the address of the last
> line of the buffer.
>
> However, without this commit, busybox ed will set the current line
> number to 1 if a file is given on the command-line and this file is not
> empty (lastNum != 0). This is incorrect and fixed in this commit by not
> modifying the current line number in ed_main(). As such, the current
> line number will be zero for empty files and otherwise be set to the
> address of the last line of the buffer.
>
> Signed-off-by: Sören Tempel <soeren+git@soeren-tempel.net>
> ---
> editors/ed.c | 2 --
> 1 file changed, 2 deletions(-)
>
> diff --git a/editors/ed.c b/editors/ed.c
> index 14540e566..cb903bca7 100644
> --- a/editors/ed.c
> +++ b/editors/ed.c
> @@ -1010,8 +1010,6 @@ int ed_main(int argc UNUSED_PARAM, char **argv)
> if (!readLines(fileName, 1)) {
> return EXIT_SUCCESS;
> }
> - if (lastNum)
> - setCurNum(1);
> dirty = FALSE;
> }
>
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> busybox@busybox.net
> http://lists.busybox.net/mailman/listinfo/busybox
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