Merge tag 'gitgui-0.21.0' of git://repo.or.cz/git-gui

git-gui 0.21.0

* tag 'gitgui-0.21.0' of git://repo.or.cz/git-gui: (22 commits)
  git-gui: set version 0.21
  git-gui: Mark 'All' in remote.tcl for translation
  git-gui i18n: Updated Bulgarian translation (565,0f,0u)
  git-gui: avoid persisting modified author identity
  git-gui: handle the encoding of Git's output correctly
  git-gui: unicode file name support on windows
  git-gui: Update Russian translation
  git-gui: maintain backwards compatibility for merge syntax
  git-gui i18n: mark string in lib/error.tcl for translation
  git-gui: fix incorrect use of Tcl append command
  git-gui i18n: mark "usage:" strings for translation
  git-gui i18n: internationalize use of colon punctuation
  git-gui: ensure the file in the diff pane is in the list of selected files
  git-gui: support for $FILENAMES in tool definitions
  git-gui: fix initial git gui message encoding
  git-gui/po/glossary/txt-to-pot.sh: use the $( ... ) construct for command substitution
  git-gui (Windows): use git-gui.exe in `Create Desktop Shortcut`
  git-gui: fix detection of Cygwin
  Amend tab ordering and text widget border and highlighting.
  Allow keyboard control to work in the staging widgets.
  ...

git-gui/lib/commit.tcl

@@ -2,7 +2,7 @@
 # Copyright (C) 2006, 2007 Shawn Pearce
 
 proc load_last_commit {} {
-	global HEAD PARENT MERGE_HEAD commit_type ui_comm
+	global HEAD PARENT MERGE_HEAD commit_type ui_comm commit_author
 	global repo_config
 
 	if {[llength $PARENT] == 0} {
@@ -34,6 +34,8 @@ You are currently in the middle of a merge that has not been fully completed.  Y
 					lappend parents [string range $line 7 end]
 				} elseif {[string match {encoding *} $line]} {
 					set enc [string tolower [string range $line 9 end]]
+				} elseif {[regexp "author (.*)\\s<(.*)>\\s(\\d.*$)" $line all name email time]} {
+					set commit_author [list name $name email $email date $time]
 				}
 			}
 			set msg [read $fd]
@@ -106,9 +108,10 @@ proc do_signoff {} {
 }
 
 proc create_new_commit {} {
-	global commit_type ui_comm
+	global commit_type ui_comm commit_author
 
 	set commit_type normal
+	unset -nocomplain commit_author
 	$ui_comm delete 0.0 end
 	$ui_comm edit reset
 	$ui_comm edit modified false
@@ -322,11 +325,12 @@ proc commit_writetree {curHEAD msg_p} {
 }
 
 proc commit_committree {fd_wt curHEAD msg_p} {
-	global HEAD PARENT MERGE_HEAD commit_type
+	global HEAD PARENT MERGE_HEAD commit_type commit_author
 	global current_branch
 	global ui_comm selected_commit_type
 	global file_states selected_paths rescan_active
 	global repo_config
+	global env
 
 	gets $fd_wt tree_id
 	if {[catch {close $fd_wt} err]} {
@@ -366,6 +370,9 @@ A rescan will be automatically started now.
 		}
 	}
 
+	if {[info exists commit_author]} {
+		set old_author [commit_author_ident $commit_author]
+	}
 	# -- Create the commit.
 	#
 	set cmd [list commit-tree $tree_id]
@@ -381,8 +388,14 @@ A rescan will be automatically started now.
 		error_popup [strcat [mc "commit-tree failed:"] "\n\n$err"]
 		ui_status [mc "Commit failed."]
 		unlock_index
+		unset -nocomplain commit_author
+		commit_author_reset $old_author
 		return
 	}
+	if {[info exists commit_author]} {
+		unset -nocomplain commit_author
+		commit_author_reset $old_author
+	}
 
 	# -- Update the HEAD ref.
 	#
@@ -509,3 +522,20 @@ proc commit_postcommit_wait {fd_ph cmt_id} {
 	}
 	fconfigure $fd_ph -blocking 0
 }
+
+proc commit_author_ident {details} {
+	global env
+	array set author $details
+	set old [array get env GIT_AUTHOR_*]
+	set env(GIT_AUTHOR_NAME) $author(name)
+	set env(GIT_AUTHOR_EMAIL) $author(email)
+	set env(GIT_AUTHOR_DATE) $author(date)
+	return $old
+}
+proc commit_author_reset {details} {
+	global env
+	unset env(GIT_AUTHOR_NAME) env(GIT_AUTHOR_EMAIL) env(GIT_AUTHOR_DATE)
+	if {$details ne {}} {
+		array set env $details
+	}
+}