Whitespaces are killed in `backtick ` quotes

[anonymous]

This is the same case as in Ticket #3925 but still not fixed for backquotes.

Trac-Wiki says:

 {{{...}}} and `...` commands not only select a monospace font, but also treat 
their content as verbatim text, meaning that no further wiki processing 
is done on this text.

But this is only true for {{{ as in

three   spaces   between   words

If I do the same thing with backticks like three spaces between words or with curly braces inline as in three spaces between words Trac helpfully collates the whitespaces.

If I do the same thing with backticks like `three   spaces    between    words` 
or with curly braces inline as in {{{three   spaces   between   words}}} 
Trac helpfully collates the whitespaces.

Defect present on 0.11.7 and 0.12.3dev