change handling of standard input

For `-f /dev/stdin`, the `pathname` of the parsing context will be empty
as for any other streamed input.

`instance_t::include_directive` did not work as expected for `-f /dev/stdin`
and relative file names. One would expect them to be relative to the current
directory rather than `/dev`.

This will lead to `While parsing file ""` messages. This could be
adjusted to read `While parsing standard input`, but maybe it's not
worth the special cases.

This commit also fixes bug 788: behaviour of source_context for '-f -'

1 files changed, 19 insertions, 0 deletions

diff --git a/test/regress/BF3C1F82.test b/test/regress/BF3C1F82.test
new file mode 100644
index 00000000..50f4106f
--- /dev/null
+++ b/test/regress/BF3C1F82.test
@@ -0,0 +1,19 @@
+; Check that error reporting works for "-f -"
+
+2012/02/30 * Test
+  a  1
+  b
+test -f - reg -> 1
+__ERROR__
+While parsing file "", line 3: 
+While parsing transaction:
+<no source context>
+Error: Day of month is not valid for year
+end test
+test -f /dev/stdin reg -> 1
+__ERROR__
+While parsing file "", line 3: 
+While parsing transaction:
+<no source context>
+Error: Day of month is not valid for year
+end test