From 47585ee92019adb89bf6b86e38714c8217e92088 Mon Sep 17 00:00:00 2001
From: Hadley Wickham <h.wickham@gmail.com>
Date: Sun, 18 Apr 2021 08:57:24 -0500
Subject: [PATCH] Mention quantifier term

Fixes #898
---
 strings.Rmd | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/strings.Rmd b/strings.Rmd
index 75ba4c5..4f42585 100644
--- a/strings.Rmd
+++ b/strings.Rmd
@@ -373,7 +373,7 @@ str_view(c("grey", "gray"), "gr(e|a)y")
 
 5.  Create a regular expression that will match telephone numbers as commonly written in your country.
 
-### Repetition
+### Repetition / Quantifiers
 
 The next step up in power involves controlling how many times a pattern matches:
 
@@ -414,6 +414,8 @@ str_view(x, 'C{2,3}?')
 str_view(x, 'C[LX]+?')
 ```
 
+Collectively, these operators are called **quantifiers** because they quantify how many times a match can occur.
+
 #### Exercises
 
 1.  Describe the equivalents of `?`, `+`, `*` in `{m,n}` form.