[BUG] Invalid format string starting with "% v"

[Kelvur]

This happens when I try to translate "% vs Searcg"

[rubeniskov]

When you want use a percent must be escaped with %%

https://stackoverflow.com/questions/1860159/how-to-escape-the-percent-sign-in-cs-printf

[rubeniskov]

But it would be interesting if this kind of error detection can be supressed with a flag when the format doesn't match