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I set a variable b:aaa which has the value that I can see via echo b:aaa, how can I copy that to text? I know I can do it by

set @a = b:aaa
"ap

to get it. But can I copy it to the an open file directly?

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    Copy to what text? It's all text. If you mean using it in insert mode: <c-r>=b:aaa
    – Tommy A
    Apr 10, 2017 at 14:26
  • @TommyA I'd like to accept your answer. Apr 10, 2017 at 15:26
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    That's a technical detail that's left to you. But yes, wrapping it in string() would add safety.
    – Tommy A
    Apr 10, 2017 at 16:25
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    Are you just wanting to put the contents of a variable into a buffer? e.g. :put=b:aaa Apr 10, 2017 at 16:35
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    Additionaly see getreg() and setreg() functions for setting the register to a specific value. And also see :h let-option for setting the option to a variable. Apr 10, 2017 at 17:07

2 Answers 2

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To put the value of a variable into a buffer use the :put command with the expression register, @=:

put=b:aaa

You can use a range with :put to put it at a specific location. Put below the 9th line:

9put=b:aaa

Note: use :put! to put above the current line

For more help see:

:h :put
:h @=
:h :range
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Registers works like variables, so you are almost done. I think this would work for you:

let @a = b:aaa
"ap
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    Better use setreg() function. Apr 10, 2017 at 17:07
  • I didn't know about the setreg() function, it seems to be more functional because allow line wise and block wise selection. Also the :put solution Peter Rincker mentions is good
    – rbernabe
    Apr 10, 2017 at 18:22
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    Why is setreg() better @ChristianBrabandt? I thought it just existed to support things like setreg(l:some_var, "val")? Apr 11, 2017 at 20:08
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    @Carpetsmoker because you can force the register to actually behave like linewise, characterwise or blockwise Apr 11, 2017 at 20:21

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