Re: Regex to find case differences

On 2015-02-06 11:25, David Fishburn wrote:
> John.Smith John.Smith
> Joe.Blow Joe.blow
> Sarah.Smith sarah.smith

Just for completeness in your test-cases, I'd add

John.Smith John.Smithe

where the 2nd one matches the 1st one as a prefix but it's not a
complete match.

You've got a couple options depending on what you want to do with
them. You can use a decorate-those-that-match approach such as

:g/^\(\S*\)\s\+\<\1\>/sil! >

which will indent those that do match case so those that aren't
indented have mismatches.

Alternatively, if you just want to do a search for them, you could do

/^\(\S*\)\s\+\<\%(\1\>\)\@!

which breaks down as

^ " start of line
\( " capture the 1st name
\S* " any non-whitespace
\) " end of the capture group
" you could add an optional \ze here to only match the 1st word
\s\+ " some mandatory whitespace
\< " ensure that we're at the start of the next item
\%( " begin a non-capturing group
\1 " check if the first item matches here
\> " and also ends here
\) " end of the non-capturing group
\@! " assert that the 1st item + end-of-word doesn't happen here

-tim





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