René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Splitting a run","articleBody":"I am trying to apply formatting to a document that already exists.  I am trying to highlight text within the document, and I would like to preserve formatting around the changes I make.\r\n\r\nFor example, highlight yellow all occurrences of \"test\" in the paragraph \"This is a test. This is only a test\"\r\nIn this example the paragraph is in one run to start, but will be in four runs after highlighting [\"This is a \", 'test\", \". This is only a \", \"test\"].\r\n\r\nIt is not immediately obvious how to accomplish this goal.  There are no utility functions that I can find for copying the formatting of a run, or for splitting a run into multiple runs, or for adding a run to an arbitrary location in the paragraph.  I am considering either constructing a whole new document paragraph by paragraph (grossly inefficient) or manually implementing run.split(start, end) and paragraph.addRunAt(n) functions.  \r\n\r\nIs there a better way that I'm just missing?  If I make the functions I described would they be useful to add to the package?","author":{"url":"https://github.com/aekoch","@type":"Person","name":"aekoch"},"datePublished":"2018-07-13T01:02:51.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":8},"url":"https://github.com/519/python-docx/issues/519"}