added special Q-Register ":" for accessing dot

* We cannot call it "." since that introduces a local register
  and we don't want to add an unnecessary syntactic exception.
* Allows the idiom [: ... ]: to temporarily move around.
  Also, you can now write ^E\: without having to store dot in a register first.
* In the future we might add an ^E register as well for byte offsets.
  However, there are much fewer useful applications.
* Of course, you can now also write nU: instead of nJ, Q: instead of "." and
  n%: instead of "nC.". However it's all not really useful.

1 files changed, 2 insertions, 0 deletions

diff --git a/src/main.c b/src/main.c
index 40191b4..e93a3de 100644
--- a/src/main.c
+++ b/src/main.c
@@ -399,6 +399,8 @@ main(int argc, char **argv)
 	teco_qreg_table_insert(&teco_qreg_table_globals, teco_qreg_plain_new("_", 1));
 	/* replacement string register */
 	teco_qreg_table_insert(&teco_qreg_table_globals, teco_qreg_plain_new("-", 1));
+	/* current document's dot (":") */
+	teco_qreg_table_insert(&teco_qreg_table_globals, teco_qreg_dot_new());
 	/* current buffer name and number ("*") */
 	teco_qreg_table_insert(&teco_qreg_table_globals, teco_qreg_bufferinfo_new());
 	/* current working directory ("$") */