[GRASS-dev] [grass-code I][566] g.rename fails to rename maps

[Glynn Clements]

Patton, Eric wrote:

> >The case insensitivity may have been intentional. What happens if you
> >try this with vector maps or under windows?
> 
> >-- 
> >Glynn Clements <glynn at gclements.plus.com>
> 
> Again, in spearfish:
> 
> $ g.mlist pattern=r*
> railroads
> roads
> rstrct.areas
> rushmore
> 
> $ g.rename vect=roads,ROADS
> Rename vector <roads> to <ROADS>
> 
> $ g.mlist -r pattern='^[R|r]'
> railroads
> roads
> rstrct.areas
> rushmore

I meant: what happens if you remove the G_strcasecmp() check (or
replace it with strcmp()), then try it.

The problem is that the renaming code (both the generic code in
general/manage/lib/do_rename.c and the vector-specific code in
lib/vector/Vlib/map.c) deletes the destination before renaming the
source. If the source and destination are aliases for the same file
(or database table), then deleting the destination will delete the
source.

-- 
Glynn Clements <glynn at gclements.plus.com>