[GRASS5] [bug #3000] (grass) g.region res= DDD:MM:SS robustness

this bug's URL: http://intevation.de/rt/webrt?serial_num=3000
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Subject: g.region res= DDD:MM:SS robustness

g.region's res= is rather picky when given lat/lon DDD:MM:SS formatted numbers

G6b2: > g.region res=0:0:1
ERROR: <res=0:0:1> ** invalid input **

G6b2: > g.region res=0:0:01
G6b2: >

same probably goes for setting 'g.region n=', ewres=, etc.

Hamish

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