From: Michael D. Lowis <mike.lowis@gentex.com>
Date: Tue, 4 Sep 2018 20:20:56 +0000 (-0400)
Subject: added functions for log start and stop
X-Git-Url: https://git.mdlowis.com/?a=commitdiff_plain;h=dc1936f3972c9ba441bd6d2253669a3bbb97fdcb;p=projs%2Ftide.git

added functions for log start and stop
---

diff --git a/inc/edit.h b/inc/edit.h
index 02f2a59..153bbda 100644
--- a/inc/edit.h
+++ b/inc/edit.h
@@ -49,6 +49,8 @@ void buf_del(Buf* buf);
 
 void buf_undo(Buf* buf);
 void buf_redo(Buf* buf);
+void buf_logstart(Buf* buf);
+void buf_logstop(Buf* buf);
 void buf_logclear(Buf* buf);
 void buf_lastins(Buf* buf);
 
diff --git a/lib/buf.c b/lib/buf.c
index b0c634b..169848d 100644
--- a/lib/buf.c
+++ b/lib/buf.c
@@ -231,6 +231,15 @@ static void log_swap(Buf* buf, Log** src, Log** dest) {
     dumplog(buf);
 }
 
+void buf_logstart(Buf* buf) {
+    buf->transid = abs(buf->transid);
+}
+
+void buf_logstop(Buf* buf) {
+    if (buf->transid > 0)
+        buf->transid = -(buf->transid + 1);
+}
+
 void buf_undo(Buf* buf) {
     log_swap(buf, &(buf->undo), &(buf->redo));
 }