Merge branch 'pr-4158' into jira-prefix-and-help-and-stuff

plugins/jira/jira.plugin.zsh

@@ -19,7 +19,7 @@ open_jira_issue () {
   elif [[ "${JIRA_URL}" != "" ]]; then
     jira_url=${JIRA_URL}
   else
-    echo "JIRA url is not specified anywhere."
+    jira_url_help
     return 1
   fi
 
@@ -55,6 +55,16 @@ open_jira_issue () {
   fi
 }
 
+jira_url_help() {
+  cat << EOF
+JIRA url is not specified anywhere.
+Valid options, in order of precedence:
+  .jira-url file
+  \$HOME/.jira-url file
+  JIRA_URL environment variable
+EOF
+}
+
 jira_name () {
   if [[ -z "$1" ]]; then
     if [[ "${JIRA_NAME}" != "" ]]; then