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Update documentation for supported letters in variable names in SpEL

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Closes gh-32138
This commit is contained in:
Sam Brannen
2024-01-26 16:42:09 +01:00
parent 68cf3b928b
commit 86266b3d67
2 changed files with 10 additions and 7 deletions
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9
framework-docs/modules/ROOT/pages/core/expressions/language-ref/variables.adoc
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@@ -6,11 +6,14 @@ are set by using the `setVariable()` method in `EvaluationContext` implementatio
[NOTE]
====
Valid variable names must be composed of one or more of the following supported
Variable names must be begin with a letter (as defined below), an underscore, or a dollar
sign.
Variable names must be composed of one or more of the following supported types of
characters.
* letters: `A` to `Z` and `a` to `z`
* digits: `0` to `9`
* letter: any character for which `java.lang.Character.isLetter(char)` returns `true`
* digit: `0` to `9`
* underscore: `_`
* dollar sign: `$`
====