On So, 24 Nov 2013, [email protected] wrote:
> Hello VIM developers,
>
> There is a problem when working with switchbuf=useopen and :sb -alternate
> buffer is not updated correctly;
>
> To reproduce:
>
> vim -u NONE
> :set swb=useopen
> :new a
> :new b
> :new c
> :ls (just checking - c is %, b is #)
> :sb a
> :ls (a became % as expected, but the alternate buffer is now b while I'd
> expect it to be c)
>
> I'm runnign VIM 7.4.103 on linux, but I think it is an old issue.
I looked it up in the code and to my surprise it is not a bug but a
feature. The alternate filename is window local, thus it depends on the
window in which you issue the :ls command what '#' will be expanded to.
You can check by running :windo :ls and see the difference.
I suggest, that this is documented, something like this patch:
diff --git a/runtime/doc/cmdline.txt b/runtime/doc/cmdline.txt
--- a/runtime/doc/cmdline.txt
+++ b/runtime/doc/cmdline.txt
@@ -754,6 +754,7 @@
function expand() |expand()|.
% Is replaced with the current file name. *:_%* *c_%*
# Is replaced with the alternate file name. *:_#* *c_#*
+ (Note: is window-local.)
#n (where n is a number) is replaced with *:_#0* *:_#n*
the file name of buffer n. "#0" is the same as "#". *c_#n*
## Is replaced with all names in the argument list *:_##* *c_##*
diff --git a/runtime/doc/editing.txt b/runtime/doc/editing.txt
--- a/runtime/doc/editing.txt
+++ b/runtime/doc/editing.txt
@@ -38,6 +38,8 @@
file name. It can be used with "#" on the command line |:_#| and you can use
the |CTRL-^| command to toggle between the current and the alternate file.
However, the alternate file name is not changed when |:keepalt| is used.
+Note, that the alternate-file is local to a window (thus it can be different
+depending on the window the cursor is on).
*:keepalt* *:keepa*
:keepalt {cmd} Execute {cmd} while keeping the current alternate file
Best,
Christian
--
Und ich behaupte, daß ein Mensch, der nicht unter der einen oder
anderen Form gewohnt ist, aufrührerischen Gedanken nachzugehen, vom
rein menschlichen Standpunkt aus betrachtet, eine defekte
Geistesverfassung besitzt.
-- Gilbert Keith Chesterton
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