Minor update to tigrc and doc

doc/tigrc.5.adoc

@@ -274,6 +274,10 @@ The following variables can be set:
 
 	Number of context lines to show for diffs.
 
+'word-diff' (bool)::
+
+	Show a word diff. Only plain mode is supported. Off by default.
+
 'diff-highlight' (mixed)::
 
 	Whether to highlight diffs using Git's 'diff-highlight' program. Defaults
@@ -320,6 +324,10 @@ The following variables can be set:
 	Wrap long lines. By default, lines are not wrapped.
 	Not compatible with line numbers enabled.
 
+'wrap-search' (bool)::
+
+	Wrap around to top/bottom of view when searching. On by default.
+
 'focus-child' (bool)::
 
 	Whether to focus the child view when it is opened. When disabled the

tigrc

@@ -114,6 +114,7 @@ set status-show-untracked-files	= yes		# Show untracked files?
 set ignore-space		= no		# Enum: no, all, some, at-eol (diff)
 set show-notes			= yes		# When non-bool passed as `--show-notes=...` (diff)
 #set diff-context		= 3		# Number of lines to show around diff changes (diff)
+#set word-diff			= yes		# Show a word diff? (diff)
 #set diff-options		= -C		# User-defined options for `tig show` (git-diff)
 #set diff-highlight		= true		# String (or bool): Path to diff-highlight script,
 						#                   defaults to `diff-highlight`.