Re: [PATCH (GITK) 5/6] gitk: Fixed automatic row selection during load.

[Paul Mackerras <paulus@samba.org>]

Alexander Gavrilov writes:

> - Switching views now actually preserves the selected commit.
> - Reloading (also Edit View) preserves the currently selected commit.
> - Initial selection does not produce weird scrolling.
> 
> Signed-off-by: Alexander Gavrilov <angavrilov@gmail.com>

I need a more detailed explanation of the rationale for the specific
changes you have made in the changelog.

As for the patch, it mostly looks good, but I have a few comments
below.

> +proc getcommits {selid} {
>      global canv curview need_redisplay viewactive
>  
>      initlayout
>      if {[start_rev_list $curview]} {
> +	reset_pending_select $selid

Is there any significance to having the call to reset_pending_select
after the start_rev_list call (other than not setting pending_select
if start_rev_list fails)?  I couldn't see any.  If there is then it
should be noted in a comment and/or the patch description.

> @@ -503,7 +511,7 @@ proc updatecommits {} {
>      filerun $fd [list getcommitlines $fd $i $view 1]
>      incr viewactive($view)
>      set viewcomplete($view) 0
> -    set pending_select $mainheadid
> +    reset_pending_select {}

This doesn't actually change anything, right?  If so then I'd prefer
the simple, direct assignment to calling a procedure that does the
assignment.

> @@ -4036,6 +4042,7 @@ proc layoutmore {} {
>      }
>      if {[info exists pending_select] &&
>  	[commitinview $pending_select $curview]} {
> +	update
>  	selectline [rowofcommit $pending_select] 1

What does that update do?  Would update idletasks be better?

Thanks,
Paul.