In Textedit, how do I copy a hyperlink url, but only copy the link location and not the link text?

Question

Suppose I have a list of hyperlinked internet URL's. I want to extract their Internet addresses -- the link locations --  which are essentially hidden in the link text. Is there any way to select and copy the list of hyperlinks, but only copy the link locations, and not the link text?
For example, with the links:
The White House
Google
One of my previous posts
What I really want to copy are: "http://www.whitehouse.gov/", "http://www.google.com/", and "https://discussions.apple.com/thread/2737556".

Answer 1

I figured out how to do it. First, copy the hyperlinks onto a blank RTF document in TextEdit and save the file.
Second, open the file from within TextEdit, and make sure that the box "Ignore rich text commands" is checked in the open file dialog box. In the open document, the hyperlinks from my example in my first post will look like this:
{\rtf1\ansi\ansicpg1252\cocoartf1038\cocoasubrtf360
{\fonttbl\f0\froman\fcharset0 Times-Roman;}
{\colortbl;\red255\green255\blue255;\red0\green7\blue232;}
{\info
{\author Garald P. Weller}
{\*\copyright Garald P. Weller}}\margl1440\margr1440\vieww20000\viewh14400\viewkind0
\deftab720
\pard\pardeftab720\sa240\ql\qnatural
\f0\fs24 \cf0 \
\pard\pardeftab720\sa240\ql\qnatural
{\field{\*\fldinst{HYPERLINK "http://www.whitehouse.gov/"}}{\fldrslt \cf2 \ul \ulc2 The White House}}\
\pard\pardeftab720\sa240\ql\qnatural
{\field{\*\fldinst{HYPERLINK "http://www.google.com/"}}{\fldrslt \cf2 \ul \ulc2 Google}}\
\pard\pardeftab720\sa240\ql\qnatural
{\field{\*\fldinst{HYPERLINK "https://discussions.apple.com/thread/2737556"}}{\fldrslt \cf2 \ul \ulc2 One of my previous posts}}\
Third, use the Automator function, "Get URLs From Text," to create a service, which I called "Get URLs From Text," that receives text from any window, gets the URLs, and copies the result to the clipboard:
Fourth, select the entire page above, and go to TextEdit > Services to activate the "Get URLs" service.
Fifth, create a new TextEdit document, and paste the result.
The output is exactly what I wanted, the URLs -- i.e., the link locations -- of the three web pages, without the link text.
Another utility that will extract URLs is CopyPaste Pro, which has an innate ability to extract Internet addresses from either web pages or text pages.