From 9aee39825d3176d6b2a35cc1e19b061a3c147842 Mon Sep 17 00:00:00 2001
From: Mike McQuaid <mike@mikemcquaid.com>
Date: Sun, 25 Nov 2018 20:16:13 +0000
Subject: [PATCH 1/2] update: also update master when updating stable branch.

---
 Library/Homebrew/cmd/update.sh | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Library/Homebrew/cmd/update.sh b/Library/Homebrew/cmd/update.sh
index fc5e50e868..53204876f4 100644
--- a/Library/Homebrew/cmd/update.sh
+++ b/Library/Homebrew/cmd/update.sh
@@ -266,6 +266,11 @@ EOS
     then
       git checkout --force "$UPSTREAM_BRANCH" "${QUIET_ARGS[@]}"
     else
+      if [[ -n "$UPSTREAM_TAG" && "$UPSTREAM_BRANCH" != "master" ]]
+      then
+        git checkout --force -B "master" "origin/master" "${QUIET_ARGS[@]}"
+      fi
+
       git checkout --force -B "$UPSTREAM_BRANCH" "$REMOTE_REF" "${QUIET_ARGS[@]}"
     fi
   fi

From 70bf0d39f32632a5a56cda7f1f287ece65650658 Mon Sep 17 00:00:00 2001
From: Mike McQuaid <mike@mikemcquaid.com>
Date: Sun, 25 Nov 2018 20:16:27 +0000
Subject: [PATCH 2/2] manpage: add HOMEBREW_UPDATE_TO_TAG docs.

---
 Library/Homebrew/manpages/brew.1.md.erb | 4 ++++
 docs/Manpage.md                         | 4 ++++
 manpages/brew.1                         | 4 ++++
 3 files changed, 12 insertions(+)

diff --git a/Library/Homebrew/manpages/brew.1.md.erb b/Library/Homebrew/manpages/brew.1.md.erb
index 4ed0b8cba1..e00dd05eec 100644
--- a/Library/Homebrew/manpages/brew.1.md.erb
+++ b/Library/Homebrew/manpages/brew.1.md.erb
@@ -261,6 +261,10 @@ Note that environment variables must have a value set to be detected. For exampl
     This issue typically occurs when using FileVault or custom SSD
     configurations.
 
+  * `HOMEBREW_UPDATE_TO_TAG`:
+    If set, instructs Homebrew to always use the latest stable tag (even if
+    developer commands have been run).
+
   * `HOMEBREW_UPGRADE_CLEANUP`:
     If set, `brew upgrade` always assumes `--cleanup` has been passed.
 
diff --git a/docs/Manpage.md b/docs/Manpage.md
index b54ddad0f0..ee9de36b58 100644
--- a/docs/Manpage.md
+++ b/docs/Manpage.md
@@ -1262,6 +1262,10 @@ Note that environment variables must have a value set to be detected. For exampl
     This issue typically occurs when using FileVault or custom SSD
     configurations.
 
+  * `HOMEBREW_UPDATE_TO_TAG`:
+    If set, instructs Homebrew to always use the latest stable tag (even if
+    developer commands have been run).
+
   * `HOMEBREW_UPGRADE_CLEANUP`:
     If set, `brew upgrade` always assumes `--cleanup` has been passed.
 
diff --git a/manpages/brew.1 b/manpages/brew.1
index aeb99d00a6..78dff93153 100644
--- a/manpages/brew.1
+++ b/manpages/brew.1
@@ -1384,6 +1384,10 @@ If set, instructs Homebrew to use \fBHOMEBREW_TEMP\fR as the temporary directory
 This issue typically occurs when using FileVault or custom SSD configurations\.
 .
 .TP
+\fBHOMEBREW_UPDATE_TO_TAG\fR
+If set, instructs Homebrew to always use the latest stable tag (even if developer commands have been run)\.
+.
+.TP
 \fBHOMEBREW_UPGRADE_CLEANUP\fR
 If set, \fBbrew upgrade\fR always assumes \fB\-\-cleanup\fR has been passed\.
 .