git-gui: Display original filename and line number in blame.

When we annotate a file and show its line data, we're already asking
for copy and movement detection (-M -C).  This costs extra time, but
gives extra data.  Since we are asking for the extra data we really
should show it to the user.

Now the blame UI has two additional columns, one for the original
filename (in the case of a move/copy between files) and one for the
original line number of the current line of code.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

diff --git a/git-gui.sh b/git-gui.sh
index 160309b2c4a118ed89ef0ac099475f63465e4c29..f247d40a797b21a8c2d6e7a5a181f9e731be3968 100755 (executable)
--- a/git-gui.sh
+++ b/git-gui.sh
@@ -3190,6 +3190,25 @@ proc show_blame {commit path} {
        $w.out add $w.out.date
        lappend texts $w.out.date
 
+       text $w.out.filename -background white -borderwidth 0 \
+               -state disabled \
+               -wrap none \
+               -height 40 \
+               -width 20 \
+               -font font_diff
+       $w.out add $w.out.filename
+       lappend texts $w.out.filename
+
+       text $w.out.origlinenumber -background white -borderwidth 0 \
+               -state disabled \
+               -wrap none \
+               -height 40 \
+               -width 5 \
+               -font font_diff
+       $w.out.origlinenumber tag conf linenumber -justify right
+       $w.out add $w.out.origlinenumber
+       lappend texts $w.out.origlinenumber
+
        text $w.out.linenumber -background white -borderwidth 0 \
                -state disabled \
                -wrap none \
@@ -3286,7 +3305,9 @@ proc read_blame_catfile {fd w commit path texts w_lno w_file} {
        }
 }
 
-proc read_blame_incremental {fd w w_commit w_author w_date w_lno w_file} {
+proc read_blame_incremental {fd w
+       w_commit w_author w_date w_filename w_olno
+       w_lno w_file} {
        global blame_status blame_data
 
        if {![winfo exists $w_commit]} {
@@ -3297,6 +3318,8 @@ proc read_blame_incremental {fd w w_commit w_author w_date w_lno w_file} {
        $w_commit conf -state normal
        $w_author conf -state normal
        $w_date conf -state normal
+       $w_filename conf -state normal
+       $w_olno conf -state normal
 
        while {[gets $fd line] >= 0} {
                if {[regexp {^([a-z0-9]{40}) (\d+) (\d+) (\d+)$} $line line \
@@ -3308,6 +3331,7 @@ proc read_blame_incremental {fd w w_commit w_author w_date w_lno w_file} {
                } elseif {[string match {filename *} $line]} {
                        set n $blame_data($w,line_count)
                        set lno $blame_data($w,final_line)
+                       set ol $blame_data($w,original_line)
                        set file [string range $line 9 end]
                        set commit $blame_data($w,commit)
                        set abbrev [string range $commit 0 8]
@@ -3327,14 +3351,20 @@ proc read_blame_incremental {fd w w_commit w_author w_date w_lno w_file} {
                                $w_commit delete $lno.0 "$lno.0 lineend"
                                $w_author delete $lno.0 "$lno.0 lineend"
                                $w_date delete $lno.0 "$lno.0 lineend"
+                               $w_filename delete $lno.0 "$lno.0 lineend"
+                               $w_olno delete $lno.0 "$lno.0 lineend"
 
                                $w_commit insert $lno.0 $abbrev
                                $w_author insert $lno.0 $author
                                $w_date insert $lno.0 $atime
+                               $w_filename insert $lno.0 $file
+                               $w_olno insert $lno.0 $ol linenumber
+
                                set blame_data($w,line$lno,commit) $commit
 
                                incr n -1
                                incr lno
+                               incr ol
                        }
                } elseif {[regexp {^([a-z-]+) (.*)$} $line line header data]} {
                        set blame_data($w,$blame_data($w,commit),$header) $data
@@ -3344,6 +3374,8 @@ proc read_blame_incremental {fd w w_commit w_author w_date w_lno w_file} {
        $w_commit conf -state disabled
        $w_author conf -state disabled
        $w_date conf -state disabled
+       $w_filename conf -state disabled
+       $w_olno conf -state disabled
 
        if {[eof $fd]} {
                close $fd