David Bürgin wrote:
> Like :s//string/ and :g//, :sort // uses the last search pattern when no
> pattern is given. Unlike :s and :g it doesn't handle well the case where
> there is no last search pattern.
>
> The attached patch fixes this.
>
> Details
> -------
>
> When there is no last search pattern (e.g. on a new installation or when
> no viminfo file is present), :s//string/ and :g// both abort with
>
> E35: No previous regular expression
> E476: Invalid command
>
> In :sort, this situation isn't handled carefully enough: "//" is
> actually compiled to an empty regular expression. Output of regdump():
>
> regcomp():
> 1:BRANCH(7)
> 4:NOTHING(7)
> 7:END(0)
>
> This is not part of the advertised behaviour: "If {pattern} is empty
> (e.g. // is specified), the last search pattern is used." The patch
> makes :sort // follow the example of :s and :g and bail out with E35
> when necessary.
Thanks, I'll look into it soon.
--
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/// Bram Moolenaar -- [email protected] -- http://www.Moolenaar.net \\\
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