Merge pull request #1591 from segmentio/netlify-toml-update

netlify toml update

Author: markzegarelli

netlify.toml

@@ -6,7 +6,7 @@
 
 [context.deploy-preview]
   command = "yarn develop"
-  ignore = "git log -1 --pretty=%B | ( grep -q '\\[netlify\\-ignore\\]' )"
+  ignore = "./scripts/ignore.sh"
 
 [[redirects]]
   from = "/docs/*"

scripts/ignore.sh

@@ -0,0 +1,27 @@
+#!/usr/bin/env bash
+
+# grab the latest entry from git log
+log=$(env -i git log -1 --pretty=%B)
+
+# run a series of checks for common reasons that we shouldn't preview build.
+# if no checks match, exit with code 1 to run the build
+
+# ignore for simple typo fixes
+if echo "$log" | grep -q 'typo'; then
+exit
+# ignore link / url updates
+elif echo "$log" | grep -q 'link'; then
+exit
+# ignore when the ignore tag is explicitly added
+elif echo "$log" | grep -q 'netlify\-ignore'; then
+exit 
+# ignore dependabot updates
+elif echo "$log" | grep -q 'dependabot'; then
+exit
+# ignore when master is merged into a branch
+elif echo "$log" | grep -q 'Merge branch \SMaster\S'; then
+exit
+else
+exit 1
+fi
+