Break points after a slash or a hyphen

A justified column set twice: file paths and compounds running past the edge with no break points, then wrapping where a break after a slash or a hyphen is allowed.

Break only at spaces and a file path becomes one very long word. So does a hyphenated compound, and so does a part reference full of slashes. This page sets the same paragraph twice: above, breaking at spaces alone, so those pieces run past the column's right edge; below, breaking after a slash or a hyphen as well.

The break keeps the character on the line it belongs to, which is what a reader expects of a path: the slash stays at the end of the upper line rather than opening the lower one. No hyphen is invented anywhere, so nothing is added to the text that was not written in it.

What this example shows

• Break points allowed after a slash and after a hyphen.
• The breaking character kept at the end of the line it ends.
• Long paths wrapped without inventing a hyphen.

The code, in full

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