Also check if the input file is seekable if a filename is given (-i)

* src/pch.c (open_patch_file): Also check if the input file is
seekable if a filename is given (-i).
* tests/pipe: New file.  Test this.
* tests/Makefile.am (TESTS): Add it.

2 files changed, 43 insertions, 0 deletions

diff --git a/tests/Makefile.am b/tests/Makefile.am
index cca8a87..8559f24 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -27,6 +27,7 @@ TESTS = \
 	crlf-handling \
 	dash-o-append \
 	empty-files \
+	fifo \
 	file-modes \
 	filename-choice \
 	git-binary-diff \
diff --git a/tests/fifo b/tests/fifo
new file mode 100644
index 0000000..d6f0cc8
--- /dev/null
+++ b/tests/fifo
@@ -0,0 +1,42 @@
+# Copyright (C) 2009 Free Software Foundation, Inc.
+#
+# Copying and distribution of this file, with or without modification,
+# in any medium, are permitted without royalty provided the copyright
+# notice and this notice are preserved.
+
+# Don't recognize hunks before a filename has been specified/seen
+
+. $srcdir/test-lib.sh
+
+require_cat
+use_local_patch
+use_tmpdir
+
+# ==============================================================
+
+cat > f.diff <<EOF
+--- /dev/null
++++ f
+@@ -0,0 +1 @@
++f
+EOF
+
+check 'patch --dry-run < f.diff' <<EOF
+patching file f
+EOF
+
+check 'patch --dry-run -i f.diff' <<EOF
+patching file f
+EOF
+
+mkfifo fifo
+
+cat f.diff > fifo &
+check 'patch --dry-run < fifo' <<EOF
+patching file f
+EOF
+
+cat f.diff > fifo &
+check 'patch --dry-run -i fifo' <<EOF
+patching file f
+EOF