Remove ASCII case-insensitivity exception

Ref. #15.
tc39 · Jan 23, 2018 · 81f0a93 · 81f0a93
1 parent 71a3f90
commit 81f0a93
Show file tree

Hide file tree

Showing 2 changed files with 6 additions and 6 deletions.
diff --git a/README.md b/README.md
@@ -23,7 +23,7 @@ For `Number` values, there is [`parseInt(string, radix = 10)`](https://tc39.gith
 
 ## Proposed solution
 
-We propose extending both `BigInt` and `Number` with a new static `fromString(string, radix = 10)` method which acts as the inverse of `{BigInt,Number}.prototype.toString(radix = 10)`. It accepts only ASCII-case-insensitive strings that can be produced by `{BigInt,Number}.prototype.toString(radix = 10)`, and throws an exception for any other input.
+We propose extending both `BigInt` and `Number` with a new static `fromString(string, radix = 10)` method which acts as the inverse of `{BigInt,Number}.prototype.toString(radix = 10)`. It accepts only strings that can be produced by `{BigInt,Number}.prototype.toString(radix = 10)`, and throws an exception for any other input.
 
 ## High-level API
 
@@ -46,22 +46,22 @@ The following examples use `Number.fromString`. The semantics for `BigInt.fromSt
 Unlike `parseInt`, `fromString` intentionally lacks special handling for integer literal prefixes.
 
 ```js
-Number.parseInt('0xC0FFEE');
+Number.parseInt('0xc0ffee');
 // → 12648430
 Number.parseInt('0o755');
 // → 0
 Number.parseInt('0b00101010');
 // → 0
 
-Number.fromString('0xC0FFEE');
+Number.fromString('0xc0ffee');
 // → SyntaxError
 Number.fromString('0o755');
 // → SyntaxError
 Number.fromString('0b00101010');
 // → SyntaxError
 
 Number.fromString('C0FFEE', 16);
-// → 12648430 === 0xC0FFEE
+// → SyntaxError (toString produces lowercase digits)
 Number.fromString('c0ffee', 16);
 // → 12648430 === 0xc0ffee
 Number.fromString('755', 8);

diff --git a/spec.html b/spec.html
@@ -34,7 +34,7 @@ <h1>BigInt.fromString ( _string_, _radix_ )</h1>
  1. Else if _radix_ is *undefined*, let _R_ be 10.
  1. Else, let _R_ be ? ToInteger(_radix_).
  1. If _R_ &lt; 2 or _R_ &gt; 36, throw a *RangeError* exception.
- 1. If _string_ represents a mathematical integer value in radix-_R_ notation, using the characters <b>0</b>-<b>9</b> for digits with values 0 to 9, and the letters <b>A</b>-<b>Z</b> and <b>a</b>-<b>z</b> for digits with values 10 through 35, then
+ 1. If _string_ represents a mathematical integer value in radix-_R_ notation, using the characters <b>0</b>-<b>9</b> for digits with values 0 to 9, and the letters <b>a</b>-<b>z</b> for digits with values 10 through 35, then
  1. Let _mathInt_ be that mathematical integer value.
  1. Else, throw a *SyntaxError* exception.
  1. Let _number_ be _sign_ &times; _mathInt_.
@@ -58,7 +58,7 @@ <h1>Number.fromString ( _string_, _radix_ )</h1>
  1. Else if _radix_ is *undefined*, let _R_ be 10.
  1. Else, let _R_ be ? ToInteger(_radix_).
  1. If _R_ &lt; 2 or _R_ &gt; 36, throw a *RangeError* exception.
- 1. If _string_ represents a mathematical number value in radix-_R_ notation, using the characters <b>0</b>-<b>9</b> for digits with values 0 to 9, and the letters <b>A</b>-<b>Z</b> and <b>a</b>-<b>z</b> for digits with values 10 through 35, then
+ 1. If _string_ represents a mathematical number value in radix-_R_ notation, using the characters <b>0</b>-<b>9</b> for digits with values 0 to 9, and the letters <b>a</b>-<b>z</b> for digits with values 10 through 35, then
  1. Let _mathNum_ be that mathematical number value.
  1. Else, throw a *SyntaxError* exception.
  1. Let _number_ be _sign_ &times; _mathNum_.