added --quiet, --stdin and --stdout for easier integration into UNIX pipelines

* In principle --stdin and --stdout could have been done in pure TECO code using the
  <^T> command.
  Having built-in command-line arguments however has several advantages:
  * Significantly faster than reading byte-wise with ^T.
  * Performs EOL normalization unless specifying --8bit of course.
  * Significantly shortens command-lines.
    `sciteco -qio` and `sciteco -qi` can be real replacements for sed and awk.
* You can even place SciTECO into the middle of a pipeline while editing
  interactively:
  foo | sciteco -qio --no-profile | bar
  Unfortunately, this will not currently work when munging the profile
  as command-line parameters are also transmitted via the unnamed buffer.
  This should be changed to use special Q-registers (FIXME).
* --quiet can help to improve the test suite (TODO).
  Should probably be the default in TE_CHECK().
* --stdin and --stdout allow to simplify many SciTECO scripts, avoiding
  temporary files, especially for womenpage generation (TODO).
* For processing potentially infinite streams, you will still have to
  read using ^T.

1 files changed, 2 insertions, 0 deletions

diff --git a/src/interface.h b/src/interface.h
index 02af8a2..c0c41bd 100644
--- a/src/interface.h
+++ b/src/interface.h
@@ -66,6 +66,8 @@ typedef enum {
 	TECO_MSG_ERROR
 } teco_msg_t;
 
+extern teco_msg_t teco_interface_msg_level;
+
 /** @pure */
 void teco_interface_msg_literal(teco_msg_t type, const gchar *str, gsize len);