Add test requested by dillo:
Add file to zip file, then try reading unchanged data from it.

--HG--
branch : HEAD

regress/fopen_unchanged.test

diff --git a/regress/fopen_unchanged.test b/regress/fopen_unchanged.test
new file mode 100644
index 0000000..5e55d0c
--- /dev/null
+++ b/regress/fopen_unchanged.test
@@ -0,0 +1,5 @@
+# add buffer contents as file to zip, then read unchanged from it
+program fopen_unchanged
+return 1
+args testbuffer.zip
+stderr can't zip_fopen file `teststring.txt': No such file