The folding state at a certain line in the #GtkTextBuffer.
Since #TeplGutterRendererFolds has a flat view of the folding tree, some
states can be combined; for example, %TEPL_GUTTER_RENDERER_FOLDS_STATE_END
and %TEPL_GUTTER_RENDERER_FOLDS_STATE_CONTINUE.
The folding state at a certain line in the #GtkTextBuffer.
Since #TeplGutterRendererFolds has a flat view of the folding tree, some states can be combined; for example, %TEPL_GUTTER_RENDERER_FOLDS_STATE_END and %TEPL_GUTTER_RENDERER_FOLDS_STATE_CONTINUE.