Am 30.03.2010 19:36, schrieb Tony Mechelynck:
On 31/01/10 18:12, Gary Johnson wrote:
On 2010-01-30, Bee wrote:
On Jan 29, 10:52 am, "Benjamin R. Haskell"<[email protected]> wrote:
On Fri, 29 Jan 2010, Bee wrote:
On Jan 29, 7:43 am, "Benjamin R. Haskell"<[email protected]> wrote:
...
:redir @a
...
How to save directly to a filename?
[...]
But this creates a file named savevimrc in $HOME
redir> savevimrc
How to expand savevimrc to the file name?
:exe "redir> " . savevimrc
Will this always do the same?
:exe "redir>" savevimrc
Yes.
From what I have read '.' concatenates without adding spaces,
whereas without using '.' a space will be added.
'.' is an expression operator and will concatenate two strings in a
context where an expression is allowed. Not having to use a '.'
between arguments of an exe command is a property of the exe
command, which concatenates all of its arguments with intervening
spaces.
Is it just better to get the habit of using '.' ?
No, not if you're paying attention to the context in which you're
concatenating strings. I prefer not to use the '.' in exe arguments
if I can avoid it because it looks less cluttered.
Now that I look at them, the examples under ":help :exe" are
confusing. The first two examples include spaces after the executed
command names even though none are needed there.
Regards,
Gary
I agree: both "exe[cute]" and "echo" treat their arguments the same way:
any number of expressions are allowed, and their values are concatenated
space-separated into one long string before being further processed.
Then :echo displays the result while :exe treats it as an ex-command
line. IOW you can always use :echo instead of :exe to make sure which
ex-command :exe would generate.
Almost ...
:echo {expr1} {expr2}
slightly differs from
:echo {expr1}.' '.{expr2}
The first command echoes the result of {exprN} before evaluating the next.
------------------
func! TestString()
echon '!'
return 'foo'
endfunc
echon TestString() TestString()
echo ""
echon TestString()." ".TestString()
------------------
!foo!foo
!!foo foo
--
Andy
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