1. TeXShop is a TeX editor and previewer for Mac OS X that was originally developed by Richard Koch and has since been maintained and improved upon by others. 2. TeXShop provides many features for editing documents including command completion, templates, spell checking, and support for editing Japanese documents through features like handling zenkaku space and dakuten. 3. The future of TeXShop aims to maintain its goal of having as little interface as possible to get out of the user's way and focus on their work, while continuing to support users through features like improved unicode handling.

1. Development of
TeXShop
- The Past and the Future -
Yusuke Terada
Tetsuryokukai (鉄緑会)

2. Summary
1. The history of TeXShop!
2. TeXShop’s features provided for editing
Japanese documents!
3. The future of TeXShop

3. What is TeXShop?
• TeX editor and previewer for Mac OS X!
• Open source software (GPL)!
• Developed by Richard Koch

4. TeXShop
Source Window Preview Window

5. Command Completion
Templates
AppleScript Support Macros
Resume
SyncTeX
Matrix Input Panel
Automatic Saving
Versions
Key Bindings
Symbol Input Panel
Syntax Coloring
Spell Checking
Unicode Normalization
Multi-Display Support
Split Window Place Holder
Full Screen
Regular Expression
Show Invisible Characters
Page Layout
Parenthesis Matching
BibTeX
UTF / CID export
Localizations
Switching TeX Engines

6. History
• 1985
Steve Jobs got fired
from Apple and
founded NeXT.!
• 1989 Sep.
NeXTSTEP 1.0 was
released. TeXview
1.0 was released by
Tom Rokicki.
• 1996
Apple bought NeXT
and Steve Jobs
returned to Apple.!
• 1999
Koch started
developing TeXShop
for Mac OS X beta,
inspired by TeXview.

7. History
YEAR Mac OS X Feature TeXShop
2001 10 Cheetah 1
2001 10.1 Puma
2002 10.2 Jaguar
2003 10.3 Panther
2005 10.4 Tiger PDF Kit 2
2007 10.5 Leopard
2009 10.6 Snow
2011 10.7 LeLoipoanrd Resume 3
2012 10.8 Mountain
2013 10.9 MaLvieornicks

8. TeXShop
and
Japanese Developers

9. Backslash - Yen Mark
Problem
Press Backslash Key !
on Japanese Keyboard
¥
U+00A5 U+005C
(default)

10. Backslash - Yen Mark
Problem
Press Backslash Key !
on Japanese Keyboard
¥
automatically
U+00A5 U+005C
(default)

11. Japanese Collaboratoars
• Mitsuhiro Shishikura!
• Seiji Zenitani!
• Makoto Inoue!
• Yu Itoh!
• Koichi Inoue!
• Yoshihisa Okazaki!
• Tomoaki Okayama!
• Isao Sonobe

12. TeXShop’s Features
Equipped for Editing
Japanese Documents

13. Full-Width(ZENKAKU) Space

14. Full-Width(ZENKAKU) Space
➡ Successfully compiled
➡ ERROR: Undefined
control sequence

15. Full-Width(ZENKAKU) Space
➡ Successfully compiled
➡ ERROR: Undefined
control sequence
Ordinary Space
Zenkaku Space

16. Full-Width(ZENKAKU) Space
Easy to distinguish

17. Japanese Encodings
• Shift-JIS!
• JIS (ISO-2022-JP)!
• EUC-JP!
• UTF-8!
• UTF-16 etc...

18. Emoji
(Digression)
!"#$%&'()*+,
-./01234✊✌78
9:;<=❌?@ABCD
E⚡G⛄IJK✈MNOP

19. Emoji
(Digression)

20. Circled Numbers
①②③④⑤⑥⑦⑧⑨⑩
⑪⑫⑬⑭⑮⑯⑰⑱⑲⑳
㉑㉒㉓㉔㉕㉖㉗㉘㉙㉚
㉛323334353637383940
41424344454647484950

21. Circled Numbers
①②③④⑤⑥⑦⑧⑨⑩
⑪⑫⑬⑭⑮⑯⑰⑱⑲⑳
Lost Shift-JIS / EUC-JP

22. UTF/OTF Package

23. UTF/OTF Package
①②③④⑤⑥⑦⑧⑨⑩⑪⑫⑬⑭⑮⑯⑰
⑱⑲⑳㉑㉒㉓㉔㉕㉖㉗㉘㉙㉚㉛323334
35363738394041424344454647484950
Compiled

24. UTF/OTF Package

25. UTF/OTF Package
①②③④⑤⑥⑦⑧⑨⑩⑪⑫⑬⑭⑮⑯⑰
⑱⑲⑳㉑㉒㉓㉔㉕㉖㉗㉘㉙㉚㉛323334
35363738394041424344454647484950
Compiled

26. UTF-Export
Saved
In Memory

27. UTF-Export

28. UTF-Export
Loaded
In Memory

29. Dakuten / Han-dakuten
ば
は
ba
ぱha
pa

30. Dakuten / Han-dakuten
ばDakuten
は
ba
ぱha
pa

31. Dakuten / Han-dakuten
ばDakuten
は
ba
ha ぱHan-Dakuten
pa

32. Dakuten
ばDakuten

33. Dakuten
ば
Dakuten
ば(U+3070) Hiragana letter “ba”

34. Dakuten
ば
ば(U+3070) Hiragana letter “ba”
は(U+306F) Hiragana letter “ha”
゛ (U+3099) Combining katakana-hiragana
voiced sound mark
+
Dakuten

35. Dakuten Issue

36. Dakuten Issue
➡ Successfully compiled
➡ ERROR: Undefined
control sequence

37. Dakuten Issue
➡ Successfully compiled
➡ ERROR: Undefined
control sequence
Copy & Paste
Filename on Finder

38. Unicode Normalization
• NFC : Normalization Form C
(Composition)!
• NFD : Normalization Form D
(Decomposition)

39. NFD
ほげ
ほけ゛
ほけ゛
decomposed
decomposed!
(unchanged)

40. NFC
ほげ
ほけ゛
ほけ゛
ほげ
decomposed
composed
composed

41. Unicode Normalization
Search a filename with composed-form characters
Files with decomposed-form names hit.

42. Lost in
Normalization

43. My Name

44. My Name
• English: Yusuke TERADA!
• Hiragana: てらだ ゆうすけ!
• Kanji: 寺田 侑祐

45. My Name
• English: Yusuke TERADA!
• Hiragana: てらだ ゆうすけ!
• Kanji: 寺田 侑祐

46. Demonstration
(Safari / Mail)

47. CJK Compatibility
Ideographs

48. CJK Compatibility
Ideographs

49. Lost In Normalization
祐
U+FA4F
decomposed 祐
祐
U+7950
U+7950
NFC
composed
(!)
祐
U+FA4F
祐
U+7950
decomposed
NFD
(!)

50. Composition Exclusion
Website of Unicode
Consortium

51. Composition Exclusion

52. Composition Exclusion
Normalize
Do not!
normalize
Compiled as users expected

53. The Future of
TeXShop

54. The Future of TeXShop
“The design goal for TeXShop is simple: lots of space for
the user's work, almost no space for interface and buttons.
TeXShop should be in the background ready to help, but
never in the way. What is important is the mathematics,
physics, philosophy, economics, or history typed by the user.
The highest praise is when the user didn't much notice our
program.”