Add substring indices to prefix/suffix tests.
authorChris Hanson <org/chris-hanson/cph>
Mon, 30 Jan 2017 02:39:57 +0000 (18:39 -0800)
committerChris Hanson <org/chris-hanson/cph>
Mon, 30 Jan 2017 02:39:57 +0000 (18:39 -0800)
commit2de6bd92ac061bf2a48581c0cc4c338fef3f5e41
tree559daa35327f0ad1de3725c1af0f1e3cb5db8fcb
parenta621304db074471652450eec2ba3211a506abdfb
Add substring indices to prefix/suffix tests.

Also simplify the implementations and fix a thinko in the suffix
implementations.
src/runtime/ustring.scm