PATCH: cursor position after vi yank

[Oliver Kiddle <okiddle@yahoo.co.uk>]

When producing the test cases, I noticed that zsh is not quite matching
vi in terms of cursor positioning after a yank. This fixes that.

Oliver

diff --git a/Src/Zle/zle_vi.c b/Src/Zle/zle_vi.c
index 20cece0..53919e3 100644
--- a/Src/Zle/zle_vi.c
+++ b/Src/Zle/zle_vi.c
@@ -457,7 +457,14 @@ viyank(UNUSED(char **args))
 	ret = 0;
     }
     vichgflag = 0;
-    zlecs = oldcs;
+    /* cursor now at the start of the range yanked. For line mode
+     * restore the column position */
+    if (vilinerange) {
+	while (oldcs > 0 && zleline[oldcs - 1] != ZWC('\n') &&
+		zlecs != zlell && zleline[zlecs] != ZWC('\n')) {
+	    ++zlecs; --oldcs;
+	}
+    }
     return ret;
 }
 
diff --git a/Test/X02zlevi.ztst b/Test/X02zlevi.ztst
index b4426a8..d9fa0d5 100644
--- a/Test/X02zlevi.ztst
+++ b/Test/X02zlevi.ztst
@@ -15,6 +15,28 @@
 >BUFFER: good
 >CURSOR: 4
 
+  zletest $'one two\eyb'
+0:yank left moves the cursor
+>BUFFER: one two
+>CURSOR: 4
+
+  zletest $'one two\e0ye'
+0:yank right leaves the cursor
+>BUFFER: one two
+>CURSOR: 0
+
+  zletest $'short\eoand longer\eyk'
+0:yank up line moves cursor up but not to buffer start
+>BUFFER: short
+>and longer
+>CURSOR: 4
+
+  zletest $'one\eotwo\ekyj'
+0:yank down line leaves the cursor
+>BUFFER: one
+>two
+>CURSOR: 2
+
   zletest $'yankee doodle\ebhDyy0"1P'
 0:paste register 1 to get last deletion
 >BUFFER:  doodleyankee