This version introduces an option to check by the length of the strings array. It will also convert line breaks (i.e. \r, and \n) into an array of strings.
The README.md documents the full process. If the length of the strings array does not exceed the limit, there is a chance that it may still be exported to a paste if the number of characters in a single string line (array item) exceeds the defined limits.
That is, the script now checks by the number of items in the strings array (if the HUBOT_LONGTEXT_MAX_LINES is defined - requires an integer), and by the character length of each item.
View all changes.
As always, please do feel free to open up an issue, make a pull request or contact me if you have any questions, issues, etc. Documentation should be in README.md and the source code (I am also contactable on IRC at FyreChat #sandbox channel). I have also created an Ask.fm for you to leave any questions that you may have (I do not mind answering anything unrelated to this project, e.g. HTML / CSS in general).