I have never liked the output of SSMS script to execute , so I built my own tool.
http://ydpages.com/utility/sp_help_executesproc.sql.txt
exec sp_help_executesproc 'sp_help_executesproc'
Gives you the following output:
DECLARE @procname sysname = null
,@schema sysname = null
,@verbose bit = null
,@debug int = null
SELECT @procname = @procname --sysname
,@schema = @schema --sysname
,@verbose = @verbose --bit
,@debug = @debug --int
EXECUTE [dbo].sp_help_executesproc @procname = @procname --sysname
,@schema = @schema --sysname
,@verbose = @verbose OUTPUT --bit
,@debug = @debug --int I always build my procedures with the assumption that users will give me invalid data at every opportunity, so I always allow null to be acceptable and validate all inputs before doing any damage.
Put this one in Model to make it available over time.
