diff --git a/scripts/bnf.js b/scripts/bnf.js
index cafd83c..29d8ff6 100755
--- a/scripts/bnf.js
+++ b/scripts/bnf.js
@@ -112,7 +112,7 @@ function include(path) {
 	}
 }
 
-let config = bnf.ast_to_config(ast, logger(verbose), include);
+let config = bnf.create_config(ast, { log: logger(verbose), include });
 
 if (options.compress) config = compress_config(config);
 
diff --git a/scripts/dump.js b/scripts/dump.js
index fd5fbd9..e12672f 100755
--- a/scripts/dump.js
+++ b/scripts/dump.js
@@ -2,7 +2,7 @@
 import { readFileSync } from 'node:fs';
 import { parseArgs } from 'node:util';
 import { parse, parse_info, stringify_node } from '../dist/parser.js';
-import { parse_json as parseJSONConfig } from '../dist/config.js';
+import { parse_json as parse_json_config } from '../dist/config.js';
 import { tokenize } from '../dist/tokens.js';
 import { is_issue, stringify_issue } from '../dist/issue.js';
 
@@ -69,7 +69,7 @@ for (const rawOption of options.debug) {
 
 let config;
 try {
-	config = parseJSONConfig(JSON.parse(readFileSync(options.config, 'utf-8')));
+	config = parse_json_config(JSON.parse(readFileSync(options.config, 'utf-8')));
 } catch (e) {
 	if ('errno' in e) console.error(e);
 	else console.error('Failed to resolve config:', e);
diff --git a/src/bnf.ts b/src/bnf.ts
index 8c60265..1bd1231 100644
--- a/src/bnf.ts
+++ b/src/bnf.ts
@@ -35,12 +35,12 @@ const typeForGroup = {
 	left_paren: 'required',
 } as const;
 
-export interface ASTConfigOptions {
+export interface CreateConfigOptions {
 	log?: Logger;
 	include?: (name: string) => Node[];
 }
 
-interface ASTConfigContext extends ASTConfigOptions {
+interface CreateConfigContext extends CreateConfigOptions {
 	/**
 	 * The current depth
 	 */
@@ -68,14 +68,14 @@ interface ASTConfigContext extends ASTConfigOptions {
  * Creates a copy of a context for use with children.
  * Right now this just increments the depth
  */
-function child_context(context: ASTConfigContext): ASTConfigContext {
+function child_context(context: CreateConfigContext): CreateConfigContext {
 	return {
 		...context,
 		depth: context.depth + 1,
 	};
 }
 
-function config_process_directive(text: string, $: ASTConfigContext) {
+function config_process_directive(text: string, $: CreateConfigContext) {
 	const log = logger($.log, { kind: 'directive', depth: $.depth });
 	const [, directive, contents] = text.match(/##(\w+) (.*)/i)!;
 
@@ -147,7 +147,7 @@ function config_process_directive(text: string, $: ASTConfigContext) {
 	}
 }
 
-function config_process_expression(expression: Node, $: ASTConfigContext): [DefinitionPart[], boolean] {
+function config_process_expression(expression: Node, $: CreateConfigContext): [DefinitionPart[], boolean] {
 	const _sub = child_context($);
 
 	let isAlternation = false;
@@ -253,7 +253,7 @@ function config_process_expression(expression: Node, $: ASTConfigContext): [Defi
 	return [pattern, isAlternation];
 }
 
-function config_process_node(node: Node, $: ASTConfigContext) {
+function config_process_node(node: Node, $: CreateConfigContext) {
 	const _sub = child_context($);
 
 	const log = logger($.log, { kind: node.kind, depth: $.depth });
@@ -324,7 +324,7 @@ function config_process_node(node: Node, $: ASTConfigContext) {
 	});
 }
 
-export function create_config(ast: Node[], options: ASTConfigOptions): Config {
+export function create_config(ast: Node[], options: CreateConfigOptions): Config {
 	const config: PureConfig = {
 		definitions: [],
 		literals: [],
diff --git a/src/issue.ts b/src/issue.ts
index d62ebcd..ede8997 100644
--- a/src/issue.ts
+++ b/src/issue.ts
@@ -1,4 +1,4 @@
-export interface SourceIssue {
+export interface Issue {
 	id?: string;
 	line: number;
 	column: number;
@@ -16,7 +16,7 @@ export enum IssueLevel {
 }
 
 /**
- * Placed into \x1b[<here>m
+ * Placed into ANSI escape code
  */
 const colors = {
 	[IssueLevel.Error]: 31,
@@ -34,7 +34,7 @@ function extract_location(stack: string = ''): string {
 	return '(unknown origin)';
 }
 
-export function is_issue(i: unknown): i is SourceIssue {
+export function is_issue(i: unknown): i is Issue {
 	return typeof i == 'object' && i != null && 'line' in i && 'column' in i && 'position' in i && 'source' in i && 'level' in i;
 }
 
@@ -43,7 +43,7 @@ export interface IssueFormatting {
 	trace: boolean;
 }
 
-export function stringify_issue(i: SourceIssue, options: Partial<IssueFormatting>): string {
+export function stringify_issue(i: Issue, options: Partial<IssueFormatting>): string {
 	const level = options.colors ? `\x1b[1;${colors[i.level]}m${IssueLevel[i.level]}\x1b[0m` : IssueLevel[i.level];
 
 	const trace = options.trace ? ' ' + extract_location(i.stack) : '';
@@ -61,5 +61,5 @@ export function stringify_issue(i: SourceIssue, options: Partial<IssueFormatting
 		column -= offset;
 	}
 
-	return `${i.id}:${i.line}:${column}\n\t${excerpt}\n\t${' '.repeat(column)}^\n${level}: ${i.message}${trace}`;
+	return `${i.id ? i.id + ':' : ''}${i.line}:${column}\n\t${excerpt}\n\t${' '.repeat(column)}^\n${level}: ${i.message}${trace}`;
 }
diff --git a/src/parser.ts b/src/parser.ts
index f8cf0eb..1461bfd 100644
--- a/src/parser.ts
+++ b/src/parser.ts
@@ -1,5 +1,5 @@
 import type { Common as CommonConfig } from './config.js';
-import type { IssueLevel, SourceIssue } from './issue.js';
+import type { IssueLevel, Issue } from './issue.js';
 import type { Token, TokenDefinition } from './tokens.js';
 import { tokenize } from './tokens.js';
 
@@ -140,7 +140,7 @@ export function parse(options: ParseOptions): Node[] {
 
 	const attempts = new Map<string, Node | null>();
 
-	function _issue(level: IssueLevel, message?: string): SourceIssue {
+	function _issue(level: IssueLevel, message?: string): Issue {
 		const token = tokens[position];
 		const { stack } = new Error();
 		return { id, line: token.line, column: token.column, position: token.position, source, level, message, stack };
diff --git a/src/tokens.ts b/src/tokens.ts
index ce500f5..427e3dd 100644
--- a/src/tokens.ts
+++ b/src/tokens.ts
@@ -1,4 +1,4 @@
-import type { SourceIssue } from './issue.js';
+import type { Issue } from './issue.js';
 
 export interface Token {
 	kind: string;
@@ -32,7 +32,7 @@ export function tokenize(source: string, definitions: Iterable<TokenDefinition>)
 		}
 
 		if (!token) {
-			throw { line, column, position, source, message: 'Unexpected token: ' + source[position], level: 0, stack: new Error().stack } satisfies SourceIssue;
+			throw { line, column, position, source, message: 'Unexpected token: ' + source[position], level: 0, stack: new Error().stack } satisfies Issue;
 		}
 
 		tokens.push(token);