diff --git a/package.json b/package.json
index 068775f..929f52c 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@author.io/arg",
-  "version": "1.3.14",
+  "version": "1.3.15",
   "description": "An argument parser for CLI applications.",
   "main": "src/index.js",
   "exports": {
@@ -12,11 +12,9 @@
     "test": "npm run test:node && npm run test:deno && npm run test:browser && npm run report:syntax && npm run report:size",
     "test:node": "dev test -rt node tests/*.js",
     "test:node:sanity": "dev test -rt node tests/01-sanity.js",
-    "test:node:base": "dev test -rt node tests/02-base.js",
-    "test:node:relationships": "dev test -rt node tests/06-relationships.js",
+    "test:node:regression": "dev test -rt node tests/09-regression.js",
     "test:browser": "dev test -rt browser tests/*.js",
     "test:browser:sanity": "dev test -rt browser tests/01-sanity.js",
-    "test:browser:base": "dev test -rt browser tests/02-base.js",
     "test:deno": "dev test -rt deno tests/*.js",
     "test:deno:sanity": "dev test -rt deno tests/01-sanity.js",
     "manually": "dev test -rt manual tests/*.js",
diff --git a/src/index.js b/src/index.js
index 38cd99f..c96ed75 100644
--- a/src/index.js
+++ b/src/index.js
@@ -1,7 +1,7 @@
 import Flag from './flag.js'
 
 // const PARSER = /\s*(?:((?:(?:"(?:\\.|[^"])*")|(?:'[^']*')|(?:\\.)|\S)+)\s*)/gi
-const PARSER = /((-+(?<flag>[^\s\"\']+))(\s+(?<value>([\"\']((\\\"|\\\')|[^\"\'])+[\"\']|[^-][^\s]+)))?|(?<arg>[^\s]+))/gi // eslint-disable-line no-useless-escape
+const PARSER = /((-+(?<flag>[^\s\"\']+))(\s+((?<value>[\"\'](?<unquoted_value>((\\\"|\\\')|[^\"\'])+)[\"\']|[^-][^\s]+)))?|(([\"\'](?<quoted_arg>((\\\"|\\\')|[^\"\'])+)[\"\']))|(?<arg>[^\s]+))/gi // eslint-disable-line no-useless-escape
 const BOOLS = new Set(['true', 'false'])
 
 class Parser {
@@ -176,25 +176,24 @@ class Parser {
 
     // Normalize each flag/value pairing
     Array.from([...input.matchAll(PARSER)]).forEach(parsedArg => {
-      let { flag, value, arg } = parsedArg.groups
+      let { flag, value, unquoted_value, quoted_arg, arg } = parsedArg.groups
 
       // If the arg attribute is present, add the
       // value to the arguments placeholder instead
       // of the flags
       if (arg) {
         args.push(arg)
+      } else if (quoted_arg) {
+        args.push(quoted_arg)
       } else {
+        value = unquoted_value || value
         // Flags without values are considered boolean "true"
         value = value !== undefined ? value : true
 
         // Remove surrounding quotes in string values
         // and convert true/false strings to boolean values.
-        if (typeof value === 'string') {
-          value = value.replace(/^[\"\']|[\"\']$/gi, '').replace(/\\([\"\'])/gi, '$1') // eslint-disable-line no-useless-escape
-
-          if (BOOLS.has(value.toLowerCase())) {
-            value = value.toLowerCase() === 'true'
-          }
+        if (typeof value === 'string' && BOOLS.has(value.toLowerCase())) {
+          value = value.toLowerCase() === 'true'
         }
 
         flags.push({ flag, value })
diff --git a/tests/01-sanity.js b/tests/01-sanity.js
index b067830..bac3dff 100644
--- a/tests/01-sanity.js
+++ b/tests/01-sanity.js
@@ -46,6 +46,7 @@ test('Support custom validation methods', t => {
   let Args = new Parser(input, cfg)
 
   t.ok(Args.violations.length === 0, `Expected no violations, recognized ${Args.violations.length}.`)
+  if (Args.violations.length > 0) { console.log(Args.violations) }
 
   cfg.bad = {
     alias: 'b',
@@ -54,6 +55,7 @@ test('Support custom validation methods', t => {
 
   Args = new Parser(input, cfg)
   t.ok(Args.violations.length === 1, `Expected 1 violation, recognized ${Args.violations.length}.`)
+  if (Args.violations.length > 1) { console.log(Args.violations) }
 
   Args = new Parser('test --pass abbbbc', {
     pass: {
@@ -62,6 +64,7 @@ test('Support custom validation methods', t => {
   })
 
   t.ok(Args.violations.length === 0, `Expected no violations, recognized ${Args.violations.length}.`)
+  if (Args.violations.length > 0) { console.log(Args.violations) }
 
   t.end()
 })
diff --git a/tests/09-regression.js b/tests/09-regression.js
index 22f5d70..21135e8 100644
--- a/tests/09-regression.js
+++ b/tests/09-regression.js
@@ -90,3 +90,18 @@ test('Multi-value flags', t => {
   t.expect(2, data.file.length, 'Extract multiple values')
   t.end()
 })
+
+test('Multi-value quoted and unquoted arguments', t => {
+  const input = 'me@domain.com "John Doe" empty -name \'Jill Doe\''
+  const cfg = {
+    name: { alias: 'n' }
+  }
+  const { data } = new Parser(input, cfg)
+
+  t.expect('Jill Doe', data.name, 'recognized single quoted flag')
+  t.ok(data['me@domain.com'], 'recognized unquoted string with special characters')
+  t.ok(data['John Doe'], 'recognized double quoted argument with space in the value')
+  t.ok(data.empty, 'recognized unquoted argument')
+
+  t.end()
+})