Strange error "too long" when installing docsets

[tofgarion]

Hello,

When I want to install a docset using helm-dash-install-docset, I have the following error:

Debugger entered--Lisp error: (search-failed "too long")
  search-backward("too long")
  dash-docs-extract-and-get-folder("/tmp/C-docset.tgz")
  dash-docs-install-docset-from-file("/tmp/C-docset.tgz")
  dash-docs--install-docset("http://sanfrancisco.kapeli.com/feeds/C.tgz" "C")
  helm-dash-install-docset("C")
  funcall-interactively(helm-dash-install-docset "C")
  call-interactively(helm-dash-install-docset record nil)
  command-execute(helm-dash-install-docset record)
  execute-extended-command(nil "helm-dash-install-docset" "helm-dash-install-do")
  funcall-interactively(execute-extended-command nil "helm-dash-install-docset" "helm-dash-install-do")
  call-interactively(execute-extended-command nil nil)
  command-execute(execute-extended-command)

Notice that the docset is correctly downloaded and that I have reproduced the bug using a minimal Emacs configuration (only use-package and helm-dash).

I am using helm-dash 20190527.1118 from ELPA et Emacs 26.3.50 compiled from commit c596be08f7 of the Emacs repository.

Is it a known issue?

Best,

Christophe

[pataquets]

See #201