From c1b5795705ac91a2196a6df0bf577769af0131d5 Mon Sep 17 00:00:00 2001
From: TeNNoX <tennox@posteo.de>
Date: Tue, 28 Feb 2017 23:49:28 +0000
Subject: Add note about how to use or escape variables inside other variables

---
 doc/ci/variables/README.md | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/doc/ci/variables/README.md b/doc/ci/variables/README.md
index 620d4744685..04c0af44237 100644
--- a/doc/ci/variables/README.md
+++ b/doc/ci/variables/README.md
@@ -131,6 +131,16 @@ job_name:
   variables: []
 ```
 
+You are able to use other variables inside your variable definition (or escape them with `$$`):
+
+```yaml
+variables:
+  LS_CMD: 'ls $FLAGS $$TMP_DIR'
+  FLAGS: '-al'
+script:
+  - 'eval $LS_CMD'  # will execute 'ls -al $TMP_DIR'
+```
+
 ## Secret variables
 
 >**Notes:**
-- 
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