upgrade to Tamsyn v1.9

README.markdown

@@ -2,7 +2,7 @@ Tamzen font
 ===========
 
 This is [my personal fork][1] of the wonderful [Tamsyn font][2] by Scott Fial.
-It is programatically forked from Tamsyn version 1.8 by the `Tamzen.rb` script
+It is programatically forked from Tamsyn version 1.9 by the `Tamzen.rb` script
 (needs `gem install grit` library) and diverges from it in the following ways:
 
 * Medium "g" is backported from Tamsyn 1.6.

Tamzen.rb

@@ -18,35 +18,44 @@ def to_s
 
 require 'grit'
 GIT = Grit::Repo.new('.')
-GIT.tree('v1.8').blobs.each do |blob|
+GIT.tree('v1.9').blobs.each do |blob|
   if blob.name =~ /\.bdf$/
-    font = Font.new(blob)
+    begin
+      font = Font.new(blob)
 
-    # delete empty glyphs except space and non-breaking space
-    font.chars.each do |code, char|
-      if code != 32 && code != 160 && char =~ /BITMAP\n(?:00\n)+ENDCHAR/
-        font.chars.delete code
+      # delete empty glyphs except space and non-breaking space
+      font.chars.each do |code, char|
+        if code != 32 && code != 160 && char =~ /BITMAP\n(?:00\n)+ENDCHAR/
+          font.chars.delete code
+        end
       end
-    end
 
-    # backport characters from older versions of the font
-    [
-      ['g'.ord, /Medium/, 'v1.6'],
-      ['h'.ord, /Medium/, 'v1.6'],
-      ['m'.ord, /Medium/, 'v1.6'],
-      ['l'.ord, //,       'v1.6'],
-      ['w'.ord, //,       'v1.6'],
-      ['y'.ord, //,       'v1.6'],
-    ].
-    each do |code, weight, version|
-      if font.props['WEIGHT_NAME'] =~ weight
-        old = Font.new(GIT.tree(version)/font.file)
-        font.chars[code] = old.chars[code]
+      # backport characters from older versions of the font
+      [
+        ['g'.ord, /Medium/, 'v1.6'],
+        ['h'.ord, /Medium/, 'v1.6'],
+        ['m'.ord, /Medium/, 'v1.6'],
+        ['l'.ord, //,       'v1.6'],
+        ['w'.ord, //,       'v1.6'],
+        ['y'.ord, //,       'v1.6'],
+      ].
+      each do |code, weight, version|
+        if font.props['WEIGHT_NAME'] =~ weight
+          if old_blob = GIT.tree(version) / font.file
+            old_font = Font.new(old_blob)
+            font.chars[code] = old_font.chars[code]
+          else
+            raise "version #{version} lacks #{font.file}"
+          end
+        end
       end
-    end
 
-    # output the modified font under a different name
-    rename = ['Tamsyn', 'Tamzen']
-    File.write font.file.sub(*rename), font.to_s.gsub(*rename)
+      # output the modified font under a different name
+      rename = ['Tamsyn', 'Tamzen']
+      File.write font.file.sub(*rename), font.to_s.gsub(*rename)
+
+    rescue => error
+      warn "#{$0}: could not fork #{blob.name}: #{error}"
+    end
   end
 end