Consistently lex local labels after keywords, even when skipping/capturing

src/asm/lexer.cpp

@@ -2166,7 +2166,7 @@ static Token skipToLeadingKeyword() {
 			} else if (isLetter(c)) {
 				shiftChar();
 				std::string keyword(1, c);
-				for (c = peek(); continuesIdentifier(c) && c != '.'; c = nextChar()) {
+				for (c = peek(); continuesIdentifier(c); c = nextChar()) {
 					keyword += c;
 				}
 				if (auto search = keywords.find(keyword); search != keywords.end()) {

test/asm/local-after-end.asm

@@ -1,5 +1,5 @@
 section "test", ROM0
-Global:
+Global: ; none of the `end*.local_*` identifiers below should get treated as keywords
 
 if 0
 	println "no"

test/asm/local-after-end.err

@@ -1,14 +1,2 @@
-error: syntax error, unexpected local label, expecting end of line or end of buffer or end of fragment literal
-    at local-after-end.asm(6)
-error: Identifier "endc.local_yes" begins with a keyword; did you mean to put a space between them?
-    at local-after-end.asm(9)
-error: syntax error, unexpected local label, expecting end of line or end of buffer or end of fragment literal
-    at local-after-end.asm(13)
-error: syntax error, unexpected local label, expecting end of line or end of buffer or end of fragment literal
-    at local-after-end.asm(16)
-error: syntax error, unexpected local label, expecting end of line or end of buffer or end of fragment literal
-    at local-after-end.asm(20)
-error: Undefined macro `mac`
-    at local-after-end.asm(21)
 FATAL: Ended block with 2 unterminated conditionals (`IF`/`ELIF`/`ELSE` blocks)
     at local-after-end.asm(22)

test/asm/local-after-end.out

@@ -1 +0,0 @@
-yes