How to merge two .PO language files?

1. How do I merge two .po files?
2. What are po files?

How do I merge two .po files?

An easy way to merge po-files for a recent update

1. Open Poedit.
2. File > New catalog.
3. You can leave information fields empty. Type in Paths: ...
4. Click "OK" Choose dir and po-filename, for example "5405.po" ...
5. Click "OK" Now you have a file with translation strings from a recent concrete5 update.
6. To merge your current po-file, you have to open it and click:

What are po files?

PO file is a portable object file, which is text-based. ... PO file may be referenced by Java programs, GNU gettext, or other software programs as a properties file. These files are saved in a human-readable format so that they can be viewed in a text editor by engineers and translators.