git-gui: add config value gui.diffopts for passing additional diff options

diff --git a/lib/option.tcl b/lib/option.tcl
index 719103a4220cd3b84734c37e78e32773a8f23a47..fb0677675ad7eddc4187cc00d0e8e039050b80e2 100644 (file)
--- a/lib/option.tcl
+++ b/lib/option.tcl
@@ -153,6 +153,7 @@ proc do_options {} {
                {i-20..200 gui.copyblamethreshold {mc "Minimum Letters To Blame Copy On"}}
                {i-0..300 gui.blamehistoryctx {mc "Blame History Context Radius (days)"}}
                {i-1..99 gui.diffcontext {mc "Number of Diff Context Lines"}}
+               {t gui.diffopts {mc "Additional Diff Parameters"}}
                {i-0..99 gui.commitmsgwidth {mc "Commit Message Text Width"}}
                {t gui.newbranchtemplate {mc "New Branch Name Template"}}
                {c gui.encoding {mc "Default File Contents Encoding"}}