Re: Value of 'v:register' updates too late

[Ingo Karkat]

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Hash: SHA1

On 11-Aug-2015 15:18, Bram Moolenaar wrote:
 
 Sampo Osmonen wrote:
 
 When you yank something into a named register the value of the
 internal variable 'v:register' doesn't change back to the default
 register after the yank. The next mapping using 'v:register'
 after such yank will see 'v:register' contain the register used
 by the initial yank operation, which contradicts the description
 in ':h v:register'. 'v:register' only gets updated when some
 operation like moving the cursor or changing the window is
 performed after the initial yank.
 
 Example - Vim 7.4 (Windows):
 
 Write some text in the buffer. Type the commands: _dl:echo
 'v:register'
 
 will show '_' as opposed to '', even though the current command
 (':echo') didn't use any register. Moving the cursor after the
 delete and then checking 'v:register' correctly yields ''
 
 This is obviously troublesome for plugins that rely on
 'v:register' to paste something, they end up pasting from the
 blackhole register for example.
 
 It's been like that forever.  I suspect some plugins actually rely
 on v:register to keep its value.  I don't see how a command can
 depend on v:register for a command that doesn't use a register.

This had been reported before:
https://groups.google.com/d/msg/vim_dev/GiIKJLzH-AM/8rvajv8YkMQJ

Many found the current behavior inconsistent and not helpful;
Christian proposed a simple patch, but there has been no follow-up
yet; I can't even find this in the TODO list.

- -- regards, ingo
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Re: [BUG] Value of 'v:register' updates too late

[Bram Moolenaar]

Sampo Osmonen wrote:

 When you yank something into a named register the value of the internal
 variable 'v:register' doesn't change back to the default register after the
 yank. The next mapping using 'v:register' after such yank will see
 'v:register' contain the register used by the initial yank operation, which
 contradicts the description in ':h v:register'. 'v:register' only gets
 updated when some operation like moving the cursor or changing the window
 is performed after the initial yank.
 
 Example - Vim 7.4 (Windows):
 
 Write some text in the buffer.
 Type the commands:
 _dl:echo 'v:register'
 
 will show '_' as opposed to '', even though the current command (':echo')
 didn't use any register. Moving the cursor after the delete and then
 checking 'v:register' correctly yields ''
 
 This is obviously troublesome for plugins that rely on 'v:register' to
 paste something, they end up pasting from the blackhole register for
 example.

It's been like that forever.  I suspect some plugins actually rely on
v:register to keep its value.  I don't see how a command can depend on
v:register for a command that doesn't use a register.

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