control-alt-space interpreted as white space (Snipe is not activated)

Safari 5.1.1 (7534.51.22) in Mac OS X 10.7.2.
1. I disabled the OS default to use control-alt-space for Spotlight†
2. started Safari
3. enabled Snipe
4. reloaded all tabs
5. no response when control-alt-space is keyed
6. Snipe icon in toolbar works as expected
7. edited the subject line of this issue
8. keyed control-alt-space whilst the i-beam was in the subject line
9. realised that in Safari, control-alt-space is interpreted as white space.

= Comparisons =

Apple TextEdit 1.7 (289.3): control-alt-space is interpreted as white space.

Bare Bones Software TextWrangler: any combination with control presents a contextual menu hint on the cursor.

---

† https://github.com/josephschmitt/Snipe/issues/15

Reproduce the issue using the Safari 5.1.1 and Mac OS X 10.7.2 steps described, comparing the keyboard shortcut with the working toolbar icon. Inspect Snipe's shortcut handling and determine how Ctrl+Alt+Space can activate Snipe instead of being treated as whitespace; done when the shortcut activates Snipe in Safari.

Written by the indexing model from the issue text.