Re: How exactly does one use the mode() function

2015-08-10 17:39 GMT+03:00 Graham Lawrence <gl00637@gmail.com>:
> I routinely pass parameters to mappings by simply typing them in at the
> beginning of a line and running the mapping which begins 'ld0'
>
> I reasoned I could extend this principle to functions as follows:
> norm "pP0i
> sleep 1
> while mode() != "n" | sleep 1 | endwh
> norm l"ry0uu
>
> That is the 'i' in the first 'norm' puts vim in Insert mode, and the while
> loop will then wait until the user presses <Esc>. Instead, the function
> goes straight to completion, so either I am applying mode() incorrectly, or
> vim never enters Insert mode. What am I missing?

This function should be used in status lines, it also works when used
with <C-r>=expr, <C-\>e and autocommands. In most other cases it will
simply return `'c'`.

But what you are missing is not mode() problems, it is :help :normal.
Read it carefully, it states explicitly that you *must* end what you
need in insert mode because :normal will abort it.

Also it is bad idea to use :normal command without a bang. It is
slightly less bad idea to use `==` or `!=` for string comparisons: use
==# and !=#.

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> Graham Lawrence
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