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-rw-r--r--doc/ci/yaml/README.md7
1 files changed, 4 insertions, 3 deletions
diff --git a/doc/ci/yaml/README.md b/doc/ci/yaml/README.md
index 5e2d9788f33..85b2c75cee8 100644
--- a/doc/ci/yaml/README.md
+++ b/doc/ci/yaml/README.md
@@ -286,9 +286,10 @@ build outputs. Setting this up globally will make all the jobs to use this
setting for output filtering and extracting the coverage information from your
builds.
-Regular expressions are used by default. So using surrounding `/` is optional,
-given it'll always be read as a regular expression. Don't forget to escape
-special characters whenever you want to match them literally.
+Regular expressions are the only valid kind of value expected here. So, using
+surrounding `/` is mandatory in order to consistently and explicitly represent
+a regular expression string. You must escape special characters if you want to
+match them literally.
A simple example:
```yaml