[PATCH] RFC: Use Levenshtein spelling suggestions in Fortran FE

[Steve Kargl]

On Tue, Dec 01, 2015 at 01:55:01PM +0100, Bernhard Reutner-Fischer wrote:
> 
> David Malcolm nice Levenshtein distance spelling check helpers
> were used in some parts of other frontends. This proposed patch adds
> some spelling corrections to the fortran frontend.
> 
> Suggestions are printed if we can find a suitable name, currently
> perusing a very simple cutoff factor:
> /* If more than half of the letters were misspelled, the suggestion is
>    likely to be meaningless.  */
> cutoff = MAX (strlen (typo), strlen (best_guess)) / 2;
> which effectively skips names with less than 4 characters.
> For e.g. structures, one could try to be much smarter in an attempt to
> also provide suggestions for single-letter members/components.
> 
> This patch covers (at least partly):
> - user-defined operators
> - structures (types and their components)
> - functions
> - symbols (variables)
> 
> I do not immediately see how to handle subroutines. Ideas?
> 
> If anybody has a testcase where a spelling-suggestion would make sense
> then please pass it along so we maybe can add support for GCC-7.
> 

What problem are you trying to solve here?  The patch looks like
unneeded complexity with the result of injecting C++ idioms into
the Fortran FE.

-- 
Steve