git-gui: Cleanup minor nits in blame code

We can use [list ...] rather than "", especially when we are talking
about values as then they are properly escaped if necessary.  Small
nit, but probably not a huge deal as the only data being inlined here
is Tk paths.

Some of the lines in the parser code were longer than 80 characters
wide, and they actually were all the same value on the end part of
the line.  Rather than keeping the mess copied-and-pasted around we
can set the last argument into a local variable and reuse it many
times.

The commit display code was also rather difficult to read on an 80
character wide terminal, so I'm moving it all into a double quoted
string that is easier to read.

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

lib/blame.tcl

@@ -166,8 +166,8 @@ constructor new {i_commit i_path} {
 		bind $i <Control-Key-f> {catch {%W yview scroll  1 pages};break}
 	}
 
-	bind $w.cm.t <Button-1> "focus $w.cm.t"
-	bind $top <Visibility> "focus $top"
+	bind $w.cm.t <Button-1> [list focus $w.cm.t]
+	bind $top <Visibility> [list focus $top]
 	bind $top <Destroy> [list delete_this $this]
 
 	if {$commit eq {}} {
@@ -237,17 +237,18 @@ method _read_blame {fd} {
 			set cmit $r_commit
 
 			while {$n > 0} {
+				set lno_e "$lno.0 lineend + 1c"
 				if {[catch {set g g$line_commit($lno)}]} {
-					$w_load tag add annotated $lno.0 "$lno.0 lineend + 1c"
+					$w_load tag add annotated $lno.0 $lno_e
 				} else {
-					$w_line tag remove g$g $lno.0 "$lno.0 lineend + 1c"
-					$w_file tag remove g$g $lno.0 "$lno.0 lineend + 1c"
+					$w_line tag remove g$g $lno.0 $lno_e
+					$w_file tag remove g$g $lno.0 $lno_e
 				}
 
 				set line_commit($lno) $cmit
 				set line_file($lno)   $file
-				$w_line tag add g$cmit $lno.0 "$lno.0 lineend + 1c"
-				$w_file tag add g$cmit $lno.0 "$lno.0 lineend + 1c"
+				$w_line tag add g$cmit $lno.0 $lno_e
+				$w_file tag add g$cmit $lno.0 $lno_e
 
 				if {$highlight_line == -1} {
 					if {[lindex [$w_file yview] 0] == 0} {
@@ -296,10 +297,11 @@ method _click {cur_w pos} {
 	set lno [lindex [split [$cur_w index $pos] .] 0]
 	if {$lno eq {}} return
 
+	set lno_e "$lno.0 + 1 line"
 	$w_line tag remove in_sel 0.0 end
 	$w_file tag remove in_sel 0.0 end
-	$w_line tag add in_sel $lno.0 "$lno.0 + 1 line"
-	$w_file tag add in_sel $lno.0 "$lno.0 + 1 line"
+	$w_line tag add in_sel $lno.0 $lno_e
+	$w_file tag add in_sel $lno.0 $lno_e
 
 	_showcommit $this $lno
 }
@@ -327,8 +329,7 @@ method _showcommit {lno} {
 
 	$w_cmit conf -state normal
 	$w_cmit delete 0.0 end
-	if {[catch {set cmit $line_commit($lno)} myerr]} {
-		puts "myerr = $myerr"
+	if {[catch {set cmit $line_commit($lno)}]} {
 		set cmit {}
 		$w_cmit insert end "Loading annotation..."
 	} else {
@@ -381,12 +382,12 @@ method _showcommit {lno} {
 			set header($cmit,message) $msg
 		}
 
-		$w_cmit insert end "commit $cmit\n"
-		$w_cmit insert end "Author: $author_name $author_email $author_time\n"
-		$w_cmit insert end "Committer: $committer_name $committer_email $committer_time\n"
-		$w_cmit insert end "Original File: [escape_path $line_file($lno)]\n"
-		$w_cmit insert end "\n"
-		$w_cmit insert end $msg
+		$w_cmit insert end "commit $cmit
+Author: $author_name $author_email $author_time
+Committer: $committer_name $committer_email $committer_time
+Original File: [escape_path $line_file($lno)]
+
+$msg"
 	}
 	$w_cmit conf -state disabled