bug#25905: 25.1; Can't find regexp and replace in SVG files

[Juri Linkov]

>> There is also the dired-do-isearch command that searches in marked files.
>>
>> OTOH, when such "making text visible to search" would be implemented
>> for isearch, then it will be used automatically by query-replace that
>> relies on the same search functions.
>
> That's true...
>
> So we basically need some new functionality for switching to text mode
> in image buffers when we're doing searches?

Maybe isearch-open-necessary-overlays should detect if there is an image
over point, then switch the buffer to text mode.

> Is image mode the only mode where this would be useful?

I don't know any other mode that could benefit from this feature.