Show heads as well as tags

diff --git a/gitk b/gitk
index f7ff049..9656ef2 100755 (executable)
--- a/gitk
+++ b/gitk
@@ -7,7 +7,7 @@ exec wish "$0" -- "${1+$@}"
 # and distributed under the terms of the GNU General Public Licence,
 # either version 2, or (at your option) any later version.
 
-# CVS $Revision: 1.20 $
+# CVS $Revision: 1.21 $
 
 proc getcommits {rargs} {
     global commits commfd phase canv mainfont
@@ -50,7 +50,7 @@ to allow selection of commits to be displayed.)"
        exit 1
     }
     if {![regexp {^[0-9a-f]{40}$} $line]} {
-       error_popup "Can't parse git-rev-tree output: {$line}"
+       error_popup "Can't parse git-rev-list output: {$line}"
        exit 1
     }
     lappend commits $line
@@ -130,7 +130,7 @@ proc readcommit {id} {
 }
 
 proc readrefs {} {
-    global tagids idtags
+    global tagids idtags headids idheads
     set tags [glob -nocomplain -types f .git/refs/tags/*]
     foreach f $tags {
        catch {
@@ -154,6 +154,20 @@ proc readrefs {} {
                    lappend idtags($obj) $tag
                }
            }
+           close $fd
+       }
+    }
+    set heads [glob -nocomplain -types f .git/refs/heads/*]
+    foreach f $heads {
+       catch {
+           set fd [open $f r]
+           set line [read $fd 40]
+           if {[regexp {^[0-9a-f]{40}} $line id]} {
+               set head [file tail $f]
+               set headids($head) $line
+               lappend idheads($line) $head
+           }
+           close $fd
        }
     }
 }
@@ -448,7 +462,7 @@ Copyright 
 
 Use and redistribute under the terms of the GNU General Public License
 
-(CVS $Revision: 1.20 $)} \
+(CVS $Revision: 1.21 $)} \
            -justify center -aspect 400
     pack $w.m -side top -fill x -padx 20 -pady 20
     button $w.ok -text Close -command "destroy $w"
@@ -537,6 +551,7 @@ proc drawgraph {} {
     global lineid linehtag linentag linedtag commitinfo
     global nextcolor colormap numcommits
     global stopped phase redisplaying selectedline idtags idline
+    global idheads
 
     allcanvs delete all
     set start {}
@@ -616,13 +631,22 @@ proc drawgraph {} {
        if {$nparents($id) > 2} {
            set xt [expr {$xt + ($nparents($id) - 2) * $linespc}]
        }
-       if {[info exists idtags($id)] && $idtags($id) != {}} {
+       set marks {}
+       set ntags 0
+       if {[info exists idtags($id)]} {
+           set marks $idtags($id)
+           set ntags [llength $marks]
+       }
+       if {[info exists idheads($id)]} {
+           set marks [concat $marks $idheads($id)]
+       }
+       if {$marks != {}} {
            set delta [expr {int(0.5 * ($linespc - $lthickness))}]
            set yt [expr $canvy - 0.5 * $linespc]
            set yb [expr $yt + $linespc - 1]
            set xvals {}
            set wvals {}
-           foreach tag $idtags($id) {
+           foreach tag $marks {
                set wid [font measure $mainfont $tag]
                lappend xvals $xt
                lappend wvals $wid
@@ -631,12 +655,20 @@ proc drawgraph {} {
            set t [$canv create line $x $canvy [lindex $xvals end] $canvy \
                       -width $lthickness -fill black]
            $canv lower $t
-           foreach tag $idtags($id) x $xvals wid $wvals {
+           foreach tag $marks x $xvals wid $wvals {
                set xl [expr $x + $delta]
                set xr [expr $x + $delta + $wid + $lthickness]
-               $canv create polygon $x [expr $yt + $delta] $xl $yt\
-                   $xr $yt $xr $yb $xl $yb $x [expr $yb - $delta] \
-                   -width 1 -outline black -fill yellow
+               if {[incr ntags -1] >= 0} {
+                   # draw a tag
+                   $canv create polygon $x [expr $yt + $delta] $xl $yt\
+                       $xr $yt $xr $yb $xl $yb $x [expr $yb - $delta] \
+                       -width 1 -outline black -fill yellow
+               } else {
+                   # draw a head
+                   set xl [expr $xl - $delta/2]
+                   $canv create polygon $x $yt $xr $yt $xr $yb $x $yb \
+                       -width 1 -outline black -fill green
+               }
                $canv create text $xl $canvy -anchor w -text $tag \
                    -font $mainfont
            }
@@ -1334,7 +1366,7 @@ set mainfont {Helvetica 9}
 set textfont {Courier 9}
 
 set colors {green red blue magenta darkgrey brown orange}
-set colorbycommitter false
+set colorbycommitter 0
 
 catch {source ~/.gitk}