Make it so that when unrolling a seed packet, names are first santized.

Without this, you could havea a let-multi that used a key of "komoroske.com:user_first_name" (as it's supposed to) but that's not a valid seed ID.

Should have been fixed in a925bdb

Part of #18. Part of #36.

src/seed.ts

@@ -28,6 +28,7 @@ import {
 import { 
 	Environment
 } from './environment.js';
+import { safeName } from './util.js';
 
 //expandSeedData adds itself (and any sub-seeds) to the result. It returns the
 //actual ID the seed decided on and registered itself with.
@@ -70,7 +71,7 @@ const expandSeedData = (idFromParent : SeedID, data : SeedData, result : Expande
 
 		const subSeedData = value as SeedData;
 
-		const subID = id + '-' + key;
+		const subID = id + '-' + safeName(key);
 		const actualSubID = expandSeedData(subID, subSeedData, result);
 
 		const subReference : SeedReference = {

src/util.ts

@@ -12,4 +12,10 @@ const ILLEGAL_FILE_CHARS = /[\/\?<>\\:\*\|"]/g;
 //Returns a filename like input but with characters that are illegal on mac stripped out.
 export const safeFileName = (input : string) : string => {
 	return input.replace(ILLEGAL_FILE_CHARS, '_');
+};
+
+const ILLEGAL_NAME_CHARS = /[^a-zA-Z0-9_-]/g;
+
+export const safeName = (input : string) : string => {
+	return input.replace(ILLEGAL_NAME_CHARS, '_');
 };