Re: [PATCH/RFC] git-gui: disable (un)staging for files with typechange flags

>This covers also the case for newly added files in the index. Like this:
>
>    echo bar >foo
>    git add foo
>    rm foo
>    ln -s bar foo
>
>This will result in an state of AT. And for cases where the type change is
>staged, and the new type was modified after the staging. Like this (cont.):
>
>    git add foo
>    git commit -mfoo
>    rm foo
>    echo bar >foo
>    git add foo
>    echo baz >foo
>
>Will result in an state of TM for foo.
>
>Signed-off-by: Bert Wesarg <bert.wesarg@googlemail.com>
>---
> git-gui.sh |    6 ++++--
> 1 files changed, 4 insertions(+), 2 deletions(-)
>
>diff --git a/git-gui.sh b/git-gui.sh
>index 38362fa..1bebcf1 100755
>--- a/git-gui.sh
>+++ b/git-gui.sh
>@@ -1993,7 +1993,9 @@ foreach i {
> 		{MD {mc "Staged for commit, missing"}}
> 
> 		{_T {mc "File type changed, not staged"}}
>+		{AT {mc "File type changed, old type staged for commit"}}
> 		{T_ {mc "File type changed, staged"}}
>+		{TM {mc "Staged file type change, modification not staged"}}
> 
> 		{_O {mc "Untracked, not staged"}}
> 		{A_ {mc "Staged for commit"}}
>@@ -3533,8 +3535,8 @@ proc popup_diff_menu {ctxm ctxmmg ctxmsm x y X Y} {
> 			|| $current_diff_path eq {}
> 			|| {__} eq $state
> 			|| {_O} eq $state
>-			|| {_T} eq $state
>-			|| {T_} eq $state
>+			|| [string match {?T} $state]
>+			|| [string match {T?} $state]
> 			|| [has_textconv $current_diff_path]} {
> 			set s disabled
> 		} else {