Hi Zdenek,
On 5/5/06, Zdenek Sekera <[EMAIL PROTECTED]> wrote:
I have this problem (trivially simplified a real case):
let a="a\nb\nc"
When echo'ing it, it displays lines:
:echo a
a
b
c
Now I need to call system() and have the contents of 'a'
as the file, without actually writing the 'a' into a temp file,
something like this:
execute "system(". editor . " " . file .")"
where 'editor' is a variable containing the editor name,
could be
let editor=gvim
and 'file' is *the something* containing the lines from
the variable 'a'.
Can that be done or do I have to go via a temp file?
The system() function in Vim7 takes an additional optional argument that
specifies the input to a command:
----------------------------------------------------------------------------------------------------------
system({expr} [, {input}]) *system()* *E677*
Get the output of the shell command {expr}.
When {input} is given, this string is written to a file and
passed as stdin to the command. The string is written as-is,
you need to take care of using the correct line separators
yourself. Pipes are not used.
----------------------------------------------------------------------------------------------------------
In your example, you can do:
call system(editor, a)
This will write the contents of the variable 'a' to a temporary file and
supply it to the command mentioned in the variable 'editor'.
- Yegappan
