The shell escape patch

The shell escape patch

Allow a LaTeX backend to run external commands after user confirmation.
This is a per document and per machine setting. The authorization has
to be given through the document settings pane, but is not recorded in
the document itself. Moving the document to either another computer or
another directory on the same computer revokes the authorization.
This can also be done by right clicking the red icon that appears in
the status bar when a document is marked as one requiring shell escape.
The patch also checks whether the user has added the -shell-escape
option to a LaTeX converter and nags the user to remove the option
(which would be used for all documents) in favor of the (per document)
support offered by LyX.