Re: [jed-users] Confusing behavior of transpose_lines

[Rafael Laboissière <rafael@xxxxxxxxxx>]

* Rafael Laboissière <rafael@xxxxxxxxxx> [2026-01-03 14:47]:

> This bug report has been filed against the Debian package for jed: 
> https://bugs.debian.org/1124550
>
> While I don't believe it to be a harmful bug, the outcome of the 
> transpose_lines command is prone to confusion.

I narrowed down the problem. The behavior of transpose_lines is normal in 
version pre0.99.20-183. However, in version pre0.99.20-186, transpose_lines 
scrolls down the buffer, causing the first line to disappear from the 
window.

By the way, I found another way to expose the strange scroll behavior:

Create a file with this content:

 1
 2
 3
 4
 5
 6

Open it in JED and go to the beginning of the buffer (line "1"). Set 
the mrk (Ctrl-Space), go down two lines (to line "3"), copy the region 
(ESC-w) and yank the region (Ctrl-y). In version pre0.99.20-183, the 
behavior is normal. In version pre0.99.20-186, however, the buffer 
scrolls up two lines.

Best,

Rafael

P.S.: I have noticed another thing that might be worth discussing 
regarding the transpose_* functions. There are a transpose_chars and a 
transpose_lines functions. There is also a swap_words function. For 
consistency's sake, should not the latter be named transpose_words? 
Furthermore, these functions do not behave consistently. After 
being executed, the transpose_chars and transpose_lines both position the 
cursor after the second transposed element. However, the swap_words function 
positions the cursor between the two transposed elements.
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