diff --git a/docs/expressions/customization.md b/docs/expressions/customization.md index 6fff36c65c..61b5a1ac94 100644 --- a/docs/expressions/customization.md +++ b/docs/expressions/customization.md @@ -366,7 +366,7 @@ The `parse` function exposes the following test functions: - `math.parse.isDigit(c)` The exact signature and implementation of these functions can be looked up in -the [source code of the parser](https://github.com/josdejong/mathjs/blob/master/lib/expression/parse.js). The allowed alpha characters are described here: [Constants and variables](syntax.md#constants-and-variables). +the [source code of the parser](https://github.com/josdejong/mathjs/blob/master/src/expression/parse.js). The allowed alpha characters are described here: [Constants and variables](syntax.md#constants-and-variables). For example, the phone character ☎ is not supported by default. It can be enabled by replacing the `isAlpha` function: