From 6a8a4faddde659a718ddf9601365d1184367ac78 Mon Sep 17 00:00:00 2001
From: Janine Chan <64388808+janine-c@users.noreply.github.com>
Date: Wed, 7 Jan 2026 11:19:25 -0700
Subject: [PATCH 1/3] Add list check

---
 .vale.ini                |  3 ++-
 styles/Datadog/lists.yml | 14 ++++++++++++++
 2 files changed, 16 insertions(+), 1 deletion(-)
 create mode 100644 styles/Datadog/lists.yml

diff --git a/.vale.ini b/.vale.ini
index 38b57a4..c15eeb6 100644
--- a/.vale.ini
+++ b/.vale.ini
@@ -32,4 +32,5 @@ Datadog.tense = YES
 Datadog.words_case_sensitive = YES
 Datadog.words_case_insensitive = YES
 Datadog.quotes = YES
-Datadog.aws = YES
\ No newline at end of file
+Datadog.aws = YES
+Datadog.lists = YES
\ No newline at end of file
diff --git a/styles/Datadog/lists.yml b/styles/Datadog/lists.yml
new file mode 100644
index 0000000..1e6cb68
--- /dev/null
+++ b/styles/Datadog/lists.yml
@@ -0,0 +1,14 @@
+# This file is used to lint lists.
+extends: existence
+message: "For ordered lists at all levels, use numbers (1.) instead of letters (a.)."
+scope: raw
+nonword: true
+level: warning
+action:
+  name: edit
+  params:
+  - regex
+  - '(\n+\s*)[a-z]\. ' # pattern
+  - '$11. ' # replace
+tokens:
+  - '(?<=\n\s*)([a-z]\.) '
\ No newline at end of file

From 66d894bdac05726cb1500d77a3ba4115d6486bcd Mon Sep 17 00:00:00 2001
From: Janine Chan <64388808+janine-c@users.noreply.github.com>
Date: Wed, 7 Jan 2026 12:25:16 -0700
Subject: [PATCH 2/3] Fix indentation

---
 styles/Datadog/lists.yml | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/styles/Datadog/lists.yml b/styles/Datadog/lists.yml
index 1e6cb68..26debd3 100644
--- a/styles/Datadog/lists.yml
+++ b/styles/Datadog/lists.yml
@@ -7,8 +7,8 @@ level: warning
 action:
   name: edit
   params:
-  - regex
-  - '(\n+\s*)[a-z]\. ' # pattern
-  - '$11. ' # replace
+    - regex
+    - '(\n+\s*)[a-z]\. ' # pattern
+    - '$11. ' # replace
 tokens:
   - '(?<=\n\s*)([a-z]\.) '
\ No newline at end of file

From f6a630b0ce17b04d29c59adc55405fe5b7f9dcc9 Mon Sep 17 00:00:00 2001
From: Janine Chan <64388808+janine-c@users.noreply.github.com>
Date: Fri, 17 Apr 2026 10:43:57 -0600
Subject: [PATCH 3/3] Add app_links Vale rule to flag private internal Datadog
 URLs

Catches internal subdomain patterns (dd*.datadoghq.com, demo.datadoghq.com)
and datad0g.com links, suggesting app.datadoghq.com as the replacement.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---
 styles/Datadog/app_links.yml | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
 create mode 100644 styles/Datadog/app_links.yml

diff --git a/styles/Datadog/app_links.yml b/styles/Datadog/app_links.yml
new file mode 100644
index 0000000..17a7c45
--- /dev/null
+++ b/styles/Datadog/app_links.yml
@@ -0,0 +1,14 @@
+# This file is used to lint links to internal Datadog environments that are not accessible to customers.
+extends: substitution
+message: "This looks like a private app link. Use '%s' instead of '%s'."
+link: "https://github.com/DataDog/documentation/blob/master/CONTRIBUTING.md#links"
+ignorecase: true
+level: error
+scope: raw
+action:
+  name: replace
+swap:
+  # Matches known internal subdomain patterns on the product domain
+  'https?://(?:dd[a-zA-Z0-9\-]*|demo)\.datadoghq\.com': https://app.datadoghq.com
+  # Matches the internal zero-substitution domain variant
+  'https?://(?:[a-zA-Z0-9][a-zA-Z0-9\-]*\.)?datad0g\.com': https://app.datadoghq.com