Re: [PATCH] git-gui: Error on systems with TK < 8.6.0

[Junio C Hamano <gitster@pobox.com>]

Peter van der Does <peter@avirtualhome.com> writes:

> Using git-gui on systems that run a TK version below 8.6.0 results in a
> crash when checking for the current theme.
>
> Catch the error on those systems and use a different command to check
> for the current theme.
> ---

Needs sign-off.  Also if you can make the patch against the git-gui
project (the upstream project for this part of our tree, which has
this file at lib/themed.tcl, not at git-gui/lib/themed.tcl) and send
it to its maintainer (Cc'ed), it would be great.

Thanks.

>  git-gui/lib/themed.tcl | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/git-gui/lib/themed.tcl b/git-gui/lib/themed.tcl
> index 351a712c8..bb4e8f25e 100644
> --- a/git-gui/lib/themed.tcl
> +++ b/git-gui/lib/themed.tcl
> @@ -248,7 +248,11 @@ proc tspinbox {w args} {
>  proc ttext {w args} {
>  	global use_ttk
>  	if {$use_ttk} {
> -		switch -- [ttk::style theme use] {
> +		# Handle either current Tk or older versions of 8.5
> +		if {[catch {set theme [ttk::style theme use]}]} {
> +			set theme  $::ttk::currentTheme
> +		}
> +		switch -- $theme {
>  			"vista" - "xpnative" {
>  				lappend args -highlightthickness 0 -borderwidth 0
>  			}