gitk: Highlight entries in the file list as well

This applies a bold highlight to entries in the file list pane in the
bottom right corner when it is displaying the list of changed files.
This doesn't yet highlight file list entries when it is in tree view
mode.

Signed-off-by: Paul Mackerras <paulus@samba.org>

gitk

@@ -527,6 +527,8 @@ proc makewindow {} {
     global viewhlmenu selectedhlview
     set viewhlmenu [tk_optionMenu .ctop.top.lbar.vhl selectedhlview None]
     $viewhlmenu entryconf 0 -command delvhighlight
+    $viewhlmenu conf -font $uifont
+    .ctop.top.lbar.vhl conf -font $uifont
     pack .ctop.top.lbar.vhl -side left -fill y
     label .ctop.top.lbar.alabel -text " OR author/committer:" \
 	-font $uifont
@@ -595,6 +597,7 @@ proc makewindow {} {
     pack $cflist -side left -fill both -expand 1
     $cflist tag configure highlight \
 	-background [$cflist cget -selectbackground]
+    $cflist tag configure bold -font [concat $mainfont bold]
     .ctop.cdet add .ctop.cdet.right
     bind .ctop.cdet <Configure> {resizecdetpanes %W %w}
 
@@ -1140,16 +1143,55 @@ proc init_flist {first} {
     set difffilestart {}
 }
 
+proc highlight_tag {f} {
+    global highlight_paths
+
+    foreach p $highlight_paths {
+	if {[string match $p $f]} {
+	    return "bold"
+	}
+    }
+    return {}
+}
+
+proc highlight_filelist {} {
+    global flistmode cflist
+
+    global highlight_paths
+    if {$flistmode eq "flat"} {
+	$cflist conf -state normal
+	set end [lindex [split [$cflist index end] .] 0]
+	for {set l 2} {$l < $end} {incr l} {
+	    set line [$cflist get $l.0 "$l.0 lineend"]
+	    if {[highlight_tag $line] ne {}} {
+		$cflist tag add bold $l.0 "$l.0 lineend"
+	    }
+	}
+	$cflist conf -state disabled
+    }
+}
+
+proc unhighlight_filelist {} {
+    global flistmode cflist
+
+    if {$flistmode eq "flat"} {
+	$cflist conf -state normal
+	$cflist tag remove bold 1.0 end
+	$cflist conf -state disabled
+    }
+}
+
 proc add_flist {fl} {
     global flistmode cflist
 
-    $cflist conf -state normal
     if {$flistmode eq "flat"} {
+	$cflist conf -state normal
 	foreach f $fl {
-	    $cflist insert end "\n$f"
+	    $cflist insert end "\n"
+	    $cflist insert end $f [highlight_tag $f]
 	}
+	$cflist conf -state disabled
     }
-    $cflist conf -state disabled
 }
 
 proc sel_flist {w x y} {
@@ -1704,7 +1746,7 @@ proc askvhighlight {row id} {
 
 proc hfiles_change {name ix op} {
     global highlight_files filehighlight fhighlights fh_serial
-    global mainfont
+    global mainfont highlight_paths
 
     if {[info exists filehighlight]} {
 	# delete previous highlights
@@ -1715,7 +1757,9 @@ proc hfiles_change {name ix op} {
 	    unset fhighlights
 	    unbolden $rows
 	}
+	unhighlight_filelist
     }
+    set highlight_paths {}
     after cancel do_file_hl $fh_serial
     incr fh_serial
     if {$highlight_files ne {}} {
@@ -1723,10 +1767,26 @@ proc hfiles_change {name ix op} {
     }
 }
 
+proc makepatterns {l} {
+    set ret {}
+    foreach e $l {
+	set ee [string map {"*" "\\*" "?" "\\?" "\[" "\\\[" "\\" "\\\\"} $e]
+	if {[string index $ee end] eq "/"} {
+	    lappend ret "$ee*"
+	} else {
+	    lappend ret $ee
+	    lappend ret "$ee/*"
+	}
+    }
+    return $ret
+}
+
 proc do_file_hl {serial} {
-    global highlight_files filehighlight
+    global highlight_files filehighlight highlight_paths
 
     if {[catch {set paths [shellsplit $highlight_files]}]} return
+    set highlight_paths [makepatterns $paths]
+    highlight_filelist
     set cmd [concat | git-diff-tree -r -s --stdin -- $paths]
     set filehighlight [open $cmd r+]
     fconfigure $filehighlight -blocking 0
@@ -5175,6 +5235,7 @@ set historyindex 0
 set fh_serial 0
 set highlight_names {}
 set nhl_names {}
+set highlight_paths {}
 
 set optim_delay 16