Break all lines at a boundary

[kzD1219]

Is there any way to break multiple lines that intersect at a closed polyline boundary?  I have many lines to break at a boundary and was hoping for a quick way.  I have attached an image.  I have to break all lines at the red polyline since inside the polyline the linework will be one color and outside the red boundary they will be another color.

[marko_ribar]

Try this lisp by CAB, but still you have to work to color correct lines as desired...

P.S. You have to be logged to download...

https://www.theswamp.org/index.php?topic=10370.0

HTH., M.R.

[ВeekeeCZ]

I would recommend nice routine as @marko_ribar posted by CAB on theswamp.org 

Unfortunately the original routine is not available at the moment, so I've attached previously downloaded version. Here is description of the routine:

[Kent1Cooper]

Another possibility is >here<.  Also look around that site -- I think there are other similar routines there, with different specifics.

[ВeekeeCZ]

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@Kent1Cooper wrote:

Another possibility is >here<.  ...

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You're referring to the same routine but older version.

[john.uhden]

While we're at it, is there already a routine that would trim a grid of lines outside the boundary of a closed 2D polyline?

Hmm, I think it would be easier to hatch the polyline and then explode the hatch.