Currently translated at 91.7% (762 of 831)

Currently translated at 100.0% (831 of 831)

Currently translated at 100.0% (831 of 831)

Currently translated at 100.0% (831 of 831)

Currently translated at 100.0% (831 of 831)

Currently translated at 100.0% (831 of 831)

Currently translated at 100.0% (831 of 831)

Currently translated at 100.0% (831 of 831)

checks: fix empty source and target strings causing exceptions.

Currently translated at 100.0% (830 of 830)

autofix: fix ReplaceTrailingDotsWithEllipsis to accept empty source strings

This should fix nijel/weblate#320

Having the ReplaceTrailingDotsWithEllipsis autofix enabled results in an _IndexError: string index out of range_ error whenever an empty source string is used (which is unlikely, but not technically impossible).

This patch solves this problem by first checking for non-emptiness of the source string.

For en_CA@foo it would first try en_CA and fallback to en.

This prevents various problems with non standard language names.

Fixes #318