On 2/17/09, Larson, DavidX S wrote:
>
> Hello all,
>
> I was working on my script when I ran across this unexpected behavior
> with the "if" statement. The doc says:
>
> :if {expr1} *:if* *:endif* *:en* *E171* *E579* *E580*
> :en[dif] Execute the commands until the next matching ":else"
> or ":endif" if {expr1} evaluates to non-zero.
>
> I thought that meant that if {expr1} evaluated to anything other than
> zero (such as a string) then the "if" statement passes, but it
> doesn't. It's simple enough to reproduce:
It does - but a string, evaluated in a numeric context, evaluates to
zero, unless the string can be interpretted as a number.
:echo "abcd" / 1
0
:echo "256" / 1
256
:echo "0x10" / 1
16
:echo "010" / 1
8
:echo "atoehu" / 1
0
> if "atoehu"
> echom "pass"
> else
> echom "fail"
> endif
>
> Always echo's: "fail".
Right. Because "atoehu", as a Number, is 0.
> Is the bug in the doc, vim, or in my head? I have version 7.2.106.
~Matt
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