Hi James,
On 11/19/21 17:40, James McCoy wrote:
> On Thu, Nov 18, 2021 at 01:21:53PM +0100, Alejandro Colomar wrote:
>> If you have a small file that fits in a single screen
>> (in my case, it was 38 lines, which is smaller than half a FullHD screen),
>> and
>> you delete the last lines of the file in the following way:
>>
>> If you're going to remove from line 30 to the end,
>> - goto line 30 30G
>> - set visual mode V
>> - advance a screen ^f
>> - delete d
>> - go back a screen ^b
>
> I tried reproducing this by creating a 38 line file via “seq 38 > foo.txt”
> and then following your steps by running “vim --clean foo.txt”. I saw
> no errors.
>
> What are the dimensions of your terminal when you do this?
> “:set columns? lines?” from Vim will show this.
>
> Can you reproduce it with the file I mentioned, or is it more specific
> to the contents you had?
I reproduced it again.
I'm not sure, when it happens and when not.
Try the following vi commands in the following file file:
vi test.c;
38G // this should put you in the line starting with 'auto'.
V
^f
d
^b
That should reproduce the bug.
Cheers,
Alex
$ cat test.c;
// Copyright (c) 2019 by Alejandro Colomar <alx.manpa...@gmail.com>
// SPDX-License-Identifier: LGPL-2.0-only
#ifndef INCLUDE_ALX_BASE_COMPILER_SIZE_H_
#define INCLUDE_ALX_BASE_COMPILER_SIZE_H_
#include <bsd/sys/cdefs.h>
#include <limits.h>
#include <stddef.h>
#include <sys/types.h>
#include <alx/base/assert/array.h>
#include <alx/base/compiler/cast.h>
#define ssizeof(x) static_cast(ssize_t, sizeof(x))
#define widthof(x) (sizeof(x) * CHAR_BIT)
#define swidthof(x) static_cast(ssize_t, widthof(x))
#if defined(__cplusplus)
#define lengthof(arr) std::size(arr)
#else
#define lengthof(arr) (__arraycount((arr)) +
alx_must_be_array(arr))
#endif
#define slengthof(arr) static_cast(ptrdiff_t, lengthof(arr))
#define ARRAY_BYTES(arr) (sizeof((arr)[0]) * lengthof(arr))
#define ARRAY_SBYTES(arr) static_cast(ssize_t, ARRAY_BYTES(arr))
#define ARRAY_BITS(arr) (ARRAY_BYTES(arr) * CHAR_BIT)
#define memberof(T, f) (((T *) NULL)->f)
#define containerof(ptr, T, f) ( \
{ \
auto p_ = (ptr); \
void *vp_ = p_; \
\
static_assert(alx_is_same_type(*p_, memberof(T, f)) || \
alx_is_same_type(*p_, void)); \
\
(T *) (vp_ - offsetof(T, f)); \
} \
)
#endif // INCLUDE_ALX_BASE_COMPILER_SIZE_H_
--
Alejandro Colomar
Linux man-pages comaintainer; https://www.kernel.org/doc/man-pages/
http://www.alejandro-colomar.es/
