68632Problem with --remote-expr and error checking
- Mar 9, 2013While trying to evaluate commands on a remote server and get their
output, I've ran into a problem with error checking -- it seems like
with remote-expr there's no error-checking at all.
The simplest example I can think of is this (gist:
If I open a Vim with `vim --servername FOO` and :source this file,
executing `:echo Test()` results in 2, since there is no "frobble"
command. However, if I then try `vim --servername FOO --remote-expr
'Test()'`, I get 1. I tried avoiding try/catch and using `v:errmsg`
instead, but that variable is also not set to the last error if the
function is invoked with `--remote-expr`.
For now, I'm working around this issue by using `--remote-send` to
type in a function, which evaluates the expression and sticks the
result in a global variable, and then `--remote-expr` to get the value
of the global variable. I'd really like to avoid this, though, since
it causes some other problems. Is this a known limitation or a bug? Is
there any other way for me to get error messages?
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