[ci] Handle the case when everything is up to date

.circleci/apply_patch

@@ -10,10 +10,7 @@
 ##
 ## License: GPLv3
 
-if [ ! -f "/tmp/${PUBLISH}.patch" ]; then
+exit_if_no_changes
-    echo "No \"/tmp/${PUBLISH}.patch\" file. Aborting."
-    exit 0
-fi
 
 echo_headline "Cloning target repository"
 target_URL="https://github.com/${prj_owner}/${prj_repo}.git"

.circleci/config_tmpl.yml

@@ -77,7 +77,7 @@ jobs:
           command: .circleci/push
       - run:
           name: Open PR if built in files must be updated
-          command: .circleci/built_in/maybe_pr
+          command: .circleci/maybe_pr
   "Update documentation files":
     docker:
       - image: jare/spacemacs-circleci:latest
@@ -111,7 +111,7 @@ jobs:
           command: .circleci/push
       - run:
           name: Open PR if documentation needs fixes
-          command: .circleci/org/maybe_pr
+          command: .circleci/maybe_pr
 
 workflows:
   version: 2.1
@@ -124,7 +124,9 @@ workflows:
       - "Validate Documentation"
   update-documentation:
     when:
-      equal: [ << pipeline.parameters.is_branch_update >>, "yes"]
+      and:
+        - equal: [ << pipeline.parameters.is_branch_update >>, "yes"]
+        - equal: [ << pipeline.git.branch >>, "develop"]
     jobs:
       - "Update documentation files"
   update-built-in:

.circleci/maybe_pr

@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-## open_pr Opens PR to Spacemacs repository with built-in updates
+## open_pr Opens PR to Spacemacs repository with updates (if any)
 ##
 ## Copyright (c) 2014-2021 Sylvain Benner & Contributors
 ##
@@ -10,11 +10,13 @@
 ##
 ## License: GPLv3
 
+exit_if_no_changes
+
 cd "/tmp/${PUBLISH}"
 
 export GITHUB_TOKEN=$UPD_BOT_GIT_TK
 echo_headline "Opening PR to ${UPD_BOT_LOGIN}/${UPD_BOT_REPO} repo"
-echo "[bot] Built-in auto-update" > msg
+echo "[bot] ${PUBLISH} updates" > msg
 echo >> msg
 echo "Merge with care - I'm just a stupid bot. Beep boop." >> msg
 hub pull-request -h "${PUBLISH}" -b "${CIRCLE_BRANCH}" -F msg

.circleci/org/maybe_pr

@@ -1,23 +0,0 @@
-#!/usr/bin/env bash
-## open_pr Opens PR to Spacemacs repository with documentation updates
-##
-## Copyright (c) 2014-2021 Sylvain Benner & Contributors
-##
-## Author: Eugene Yaremenko
-## URL: https://github.com/syl20bnr/spacemacs
-##
-## This file is not part of GNU Emacs.
-##
-## License: GPLv3
-
-cd "/tmp/${PUBLISH}"
-
-export GITHUB_TOKEN=$UPD_BOT_GIT_TK
-echo_headline "Opening PR to ${UPD_BOT_LOGIN}/${UPD_BOT_REPO} repo"
-echo "[bot] Documentation fixes" > msg
-echo >> msg
-echo "Merge with care - I'm just a stupid bot. Beep boop." >> msg
-hub pull-request -h "${PUBLISH}" -b "${CIRCLE_BRANCH}" -F msg
-if [ $? -ne 0 ]; then
-    echo "Seems like PR already exists (not a problem)"
-fi

.circleci/push

@@ -10,6 +10,8 @@
 ##
 ## License: GPLv3
 
+exit_if_no_changes
+
 cd "/tmp/${PUBLISH}"
 
 echo_headline "Creating fork under bot account"

.circleci/shared

@@ -41,6 +41,17 @@ echo_headline () {
 	echo
 }
 
+exit_if_no_changes () {
+    if [ ! -f "/tmp/${PUBLISH}.patch" ]; then
+        echo "\"/tmp/${PUBLISH}.patch\" file doesn't exists. Exiting."
+        exit 0
+    fi
+    if [[ -z $(grep '[^[:space:]]' "/tmp/${PUBLISH}.patch") ]]; then
+        echo "\"/tmp/${PUBLISH}.patch\" patch file is empty. Exiting."
+        exit 0
+    fi
+}
+
 select_changed_orgs () {
     changed_f_as_args=()
     while read p