[GROOVY-744] Allow groovy script extensions to be left off when running from command line

• Type: New Feature
• Status: Closed
• Priority: Trivial
• Resolution: Fixed
• Affects Version/s: 1.0-beta-9
• Fix Version/s: 1.0-beta-10
• Component/s: command line processing
• Environment: All
• Assignee: Jeremy Rayner
• Reporter: Jeremy Rayner
• Created: 23/Feb/05 15:50
• Updated: 23/Feb/05 15:55
• Resolved: 23/Feb/05 15:55

Description

rather than typing (the repetitive):

jez$ groovy Foo.groovy

It would be nice to follow the convention of the 'java' executable, allowing a command line more like:

jez$ groovy Foo

This assumes that groovy can "hunt" for the correct script file, given a list of known filename extensions

I propose that it will attempt to look in this order:
1. actual supplied name
2. name.groovy
3. name.gvy
4. name.gy
5. name.gsh
6. FileNotFoundException

The actual values here are arbitrary, but the mechanism is sound even if people end up discussing what they'd like as a standard extension for groovy scripts.
['gvy' seems like a reasonable 3 letter version, using the major consonants]
['gy' follows the perl convention of first and last letter]
['gsh' follows the shell script convention of <type-of-shell>sh]
['g' is missed out due to the clash with antlr .g files, which are more likely than most to be in the same directory]