If g:grepper.searchreg is set and grepper-tools-keys.escape contains a character which in a magic Vim regex is literal but special when escaped, for example {, then escape this character when changing to a Vim regexp (as documented by :help g:grepper.searchreg).
PS: As the submitted issues tell, I am an avid user of this helpful plug-in, thank you!
If
g:grepper.searchregis set andgrepper-tools-keys.escapecontains a character which in a magic Vim regex is literal but special when escaped, for example{, then escape this character whenchanging to a Vim regexp(as documented by:help g:grepper.searchreg).