Re: How to sort inside a line starting from a precise pattern ?

On 10/21/12 09:59, tjg wrote:
> 121021 Write about Paris with Chris @me @chris &Paris
> 121022 Phone to Inc and Gmbh @me &Inc &Gmbh
> 121029 Talk to Claire about placeholders @claire @me &Bar &Foo
>
> (in fact I do not mind what comes first, @ or &)

With your "don't mind what comes first", you can try this:

:%s/[@&]\w\+\%(\s\+[@&]\w\+\)\+$/\=join(sort(split(submatch(0))),' ')/g

which seems to do the trick for me. You can remove the "$" to let
the tags can come anywhere in the line, though it will only sort
contiguous tags, not disjoint tags.

That breaks down as

[@&]\w\+ a tagish thing
\%( make an atom but don't bother capturing it
\s\+ some whitespace
[@&]\w\+ another tagish thing
\) end of the atom
\+ one-or-more of those space+tagish pairs

It then split()s that set of tags apart on the whitespace, sort()s
the contents, then join()s it all back together with a single space
delimiting them.

-tim



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