Warn about variable name limitation

denisidoro · Sep 25, 2019 · 84c0ff2 · 84c0ff2
1 parent 9638fcc
commit 84c0ff2
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/README.md b/README.md
@@ -152,6 +152,8 @@ $ branch: git branch | awk '{print $NF}'
 
 The interface prompts for variable names inside brackets (eg `<branch>`).
 
+Variable names should only include alphanumeric characters and `_`.
+
 The command for generating possible inputs can refer other variables:
 ```sh
 # If you select 2 for x, the possible values of y will be 12 and 22