diff --git a/git-gui.sh b/git-gui.sh
index ec08b5a921..99de1a2571 100755
--- a/git-gui.sh
+++ b/git-gui.sh
@@ -1947,7 +1947,7 @@ proc show_more_context {} {
 
 proc show_less_context {} {
 	global repo_config
-	if {$repo_config(gui.diffcontext) >= 1} {
+	if {$repo_config(gui.diffcontext) > 1} {
 		incr repo_config(gui.diffcontext) -1
 		reshow_diff
 	}
diff --git a/lib/diff.tcl b/lib/diff.tcl
index 52b79e4a1f..4a7138be9c 100644
--- a/lib/diff.tcl
+++ b/lib/diff.tcl
@@ -175,7 +175,7 @@ proc show_diff {path w {lno {}} {scroll_pos {}}} {
 
 	lappend cmd -p
 	lappend cmd --no-color
-	if {$repo_config(gui.diffcontext) >= 0} {
+	if {$repo_config(gui.diffcontext) >= 1} {
 		lappend cmd "-U$repo_config(gui.diffcontext)"
 	}
 	if {$w eq $ui_index} {
diff --git a/lib/option.tcl b/lib/option.tcl
index eb958ffd47..2d4b97b7d3 100644
--- a/lib/option.tcl
+++ b/lib/option.tcl
@@ -126,7 +126,7 @@ proc do_options {} {
 		{b gui.fastcopyblame {mc "Blame Copy Only On Changed Files"}}
 		{i-20..200 gui.copyblamethreshold {mc "Minimum Letters To Blame Copy On"}}
 		{i-0..300 gui.blamehistoryctx {mc "Blame History Context Radius (days)"}}
-		{i-0..99 gui.diffcontext {mc "Number of Diff Context Lines"}}
+		{i-1..99 gui.diffcontext {mc "Number of Diff Context Lines"}}
 		{i-0..99 gui.commitmsgwidth {mc "Commit Message Text Width"}}
 		{t gui.newbranchtemplate {mc "New Branch Name Template"}}
 		} {
diff --git a/po/po2msg.sh b/po/po2msg.sh
index b7c4bf3fdf..1e9f992528 100644
--- a/po/po2msg.sh
+++ b/po/po2msg.sh
@@ -11,8 +11,8 @@ proc u2a {s} {
 	foreach i [split $s ""] {
 		scan $i %c c
 		if {$c<128} {
-			# escape '[', '\' and ']'
-			if {$c == 0x5b || $c == 0x5d} {
+			# escape '[', '\', '$' and ']'
+			if {$c == 0x5b || $c == 0x5d || $c == 0x24} {
 				append res "\\"
 			}
 			append res $i