Initial drop.

README.md

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+# gh-pr-comment
+
+## Usage
+
+```
+$ gh-pr-comment title comment
+```
+
+The script escapes special charactors for json encoding.
+
+## Required environment variables
+
+- ***TRAVIS\_REPO\_SLUG*** = user/repos
+- ***TRAVIS\_PULL\_REQUEST*** = pull request number
+- ***TRAVIS\_BOT\_GITHUB\_TOKEN*** = token with comment write permission
+

gh-pr-comment.sh

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+#!/bin/bash
+
+function gh-pr-comment()
+{
+  if [ $# -lt 2 ];
+  then
+    echo "usage: gh-pr-comment title comment" >&2
+    echo "  env:" >&2
+    echo "     - TRAVIS_REPO_SLUG        : user/repos" >&2
+    echo "     - TRAVIS_PULL_REQUEST     : pull request number" >&2
+    echo "     - TRAVIS_BOT_GITHUB_TOKEN : token with comment write permission" >&2
+    echo ' note: the script escapes special charactors for json encoding.' >&2
+
+    return
+  fi
+
+  if [ ${TRAVIS_PULL_REQUEST} != "false" ];
+  then
+    text=`echo "$2" | sed 's/\\\\/\\\\\\\\/g' | sed -n '1h;1!H;${x;s/\n/\\\\n/g;p;}' | sed 's/\"/\\\\"/g' | sed 's/\t/\\\\t/g' | sed 's/\//\\\\\//g'`
+    curl -vs -X POST -H 'Content-Type:application/json' -d "{\"body\":\"## $1\n\n$text\"}" \
+      https://api.github.com/repos/${TRAVIS_REPO_SLUG}/issues/${TRAVIS_PULL_REQUEST}/comments?access_token=${TRAVIS_BOT_GITHUB_TOKEN} 2> /dev/null
+  else
+    echo 'gh-pr-comment: TRAVIS_PULL_REQUEST is false.' >&2
+  fi
+}
+