From 9cceb35addc1374750a9402cb184c37ba690ed12 Mon Sep 17 00:00:00 2001
From: Shunsuke Suzuki <suzuki.shunsuke.1989@gmail.com>
Date: Wed, 27 Jan 2021 09:59:15 +0900
Subject: [PATCH 1/2] feat: support to get a pull request number from
 CI_INFO_PR_NUBER

https://github.com/suzuki-shunsuke/ci-info
---
 main.go | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/main.go b/main.go
index 0cb9791e..65d46ea9 100644
--- a/main.go
+++ b/main.go
@@ -8,6 +8,7 @@ import (
 	"io"
 	"os"
 	"os/exec"
+	"strconv"
 	"strings"
 	"text/template"
 
@@ -193,6 +194,16 @@ func (t *tfcmt) Run(ctx context.Context) error {
 	if pr := t.context.Int("pr"); pr != 0 {
 		ci.PR.Number = pr
 	}
+	if ci.PR.Number == 0 {
+		// support suzuki-shunsuke/ci-info
+		if prS := os.Getenv("CI_INFO_PR_NUMBER"); prS != "" {
+			a, err := strconv.Atoi(prS)
+			if err != nil {
+				return fmt.Errorf("parse CI_INFO_PR_NUMBER %s: %w", prS, err)
+			}
+			ci.PR.Number = a
+		}
+	}
 	if buildURL := t.context.String("build-url"); buildURL != "" {
 		ci.URL = buildURL
 	}

From 23a981ecbd0aa2238a8cc21fb7cb793f59f667d2 Mon Sep 17 00:00:00 2001
From: Shunsuke Suzuki <suzuki.shunsuke.1989@gmail.com>
Date: Wed, 27 Jan 2021 10:10:26 +0900
Subject: [PATCH 2/2] docs: update document

---
 COMPARED_WITH_TFNOTIFY.md | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/COMPARED_WITH_TFNOTIFY.md b/COMPARED_WITH_TFNOTIFY.md
index 0eccb1c2..dc0b4bee 100644
--- a/COMPARED_WITH_TFNOTIFY.md
+++ b/COMPARED_WITH_TFNOTIFY.md
@@ -28,6 +28,7 @@ tfcmt isn't compatible with tfnotify.
   * [Add templates configuration](#feature-add-templates-configuration)
   * [Add template functions](#feature-add-template-functions)
   * [Add command-line options about CI](#feature-add-command-line-options-about-ci)
+  * [Get pull request number from CI_INFO_PR_NUMBER](#feature-)
   * [Add --log-level option and log.level configuration and output structured log with logrus](#feature-add---log-level-option-and-loglevel-configuration-and-output-structured-log-with-logrus)
   * [Don't recreate labels](#feature-dont-recreate-labels)
   * [--version option and `version` command](#feature---version-option-and-version-command)
@@ -404,6 +405,11 @@ ex.
 $ tfcmt -owner suzuki-shunsuke -repo tfcmt -pr 3 -- terraform plan
 ```
 
+## Feature: Get pull request number from CI_INFO_PR_NUMBER
+
+[ci-info](https://github.com/suzuki-shunsuke/ci-info) is a CLI tool to get CI related information, and the environment variable `CI_INFO_PR_NUMBER` is set via ci-info by default.
+If the pull request number can't bet gotten but `CI_INFO_PR_NUMBER` is being set, `CI_INFO_PR_NUMBER` is used.
+
 ## Feature: Add --log-level option and log.level configuration and output structured log with logrus
 
 [#59](https://github.com/suzuki-shunsuke/tfcmt/pull/59)