testdata/break_rules/line_loose_cj.txt

#
# Copyright (C) 2016 and later: Unicode, Inc. and others.
# License & terms of use: http://www.unicode.org/copyright.html
# Copyright (c) 2016, International Business Machines Corporation and others. All Rights Reserved.
#
#  file:  line_loose_cj.txt
#
# Reference Line Break rules for intltest rbbi/RBBIMonkeyTest.
# Rules derived from Unicode Standard Annex #14 for Unicode 14.0.
#
# Note: Rule syntax and the monkey test itself are still a work in progress.
#       They are expected to change with review and the addition of support for rule tailoring.
#
#         Line Breaking Rules
#         Implement default line breaking as defined by
#         Unicode Standard Annex #14
#         http://www.unicode.org/reports/tr14/, tailored as noted below.
#
#         This tailors the line break behavior to correspond to CSS
#         line-break=loose (BCP47 -u-lb-loose) as defined for Chinese & Japanese.
#         It sets characters of class CJ to behave like ID.
#         In addition, it allows breaks:
#         * between ID and hyphens 2010 & 2013 (both BA)
#         * before 301C, 30A0 (both NS)
#         * before iteration marks 3005, 303B, 309D, 309E, 30FD, 30FE (all NS)
#         * between characters of LineBreak class IN such as 2026
#         * before some centered punct 203C, 2047, 2048, 2049, 30FB, FF1A, FF1B,
#           FF65 (all NS) and FF01, FF1F (both EX).
#         * before suffix characters with LineBreak class PO and EastAsianWidth A,F,W;
#           this includes: 00B0 2030 2032 2033 2035 2103 2109 FE6A FF05 FFE0
#         * after prefix characters with LineBreak class PR and EastAsianWidth A,F,W;
#           this includes: 00A4 00B1 20AC 2116 FE69 FF04 FFE1 FFE5 FFE6
#         It allows breaking before 201C and after 201D, for zh_Hans, zh_Hant, and ja.


type = line;
locale = ja@lb=loose;


AI = [:LineBreak =  Ambiguous:];
AL = [:LineBreak =  Alphabetic:];
BAX = [\u2010 \u2013];
BA = [[:LineBreak =  Break_After:] - BAX];
HH = [\u2010];      # \u2010 is HYPHEN, default line break is BA.
BB = [:LineBreak =  Break_Before:];
BK = [:LineBreak =  Mandatory_Break:];
B2 = [:LineBreak =  Break_Both:];
CB = [:LineBreak =  Contingent_Break:];
CJ = [:LineBreak =  Conditional_Japanese_Starter:];
CL = [[:LineBreak =  Close_Punctuation:] \u201d];
CMS = [:LineBreak =  Combining_Mark:];
CP = [:LineBreak =  Close_Parenthesis:];
CR = [:LineBreak =  Carriage_Return:];
EB = [:LineBreak =  EB:];
EM = [:LineBreak =  EM:];
EXX = [\uFF01 \uFF1F];
EX = [[:LineBreak =  Exclamation:] - EXX];
GL = [:LineBreak =  Glue:];
HL = [:LineBreak =  Hebrew_Letter:];
HY = [:LineBreak =  Hyphen:];
H2 = [:LineBreak =  H2:];
H3 = [:LineBreak =  H3:];
ID = [[:LineBreak =  Ideographic:] CJ];  # CSS Loose tailoring: CJ resolves to ID
IN = [:LineBreak =  Inseperable:];
IS = [:LineBreak =  Infix_Numeric:];
JL = [:LineBreak =  JL:];
JV = [:LineBreak =  JV:];
JT = [:LineBreak =  JT:];
LF = [:LineBreak =  Line_Feed:];
NL = [:LineBreak =  Next_Line:];
NSX = [\u301C \u30A0 \u3005 \u303B \u309D \u309E \u30FD \u30FE \u203C \u2047 \u2048 \u2049 \u30FB \uFF1A \uFF1B \uFF65];
NS = [[:LineBreak =  Nonstarter:] - NSX];
NU = [:LineBreak =  Numeric:];
OP = [[:LineBreak =  Open_Punctuation:] \u201c];
POX = [\u00B0 \u2030 \u2032 \u2033 \u2035 \u2103 \u2109 \uFE6A \uFF05 \uFFE0];
PO = [[:LineBreak =  Postfix_Numeric:] - POX];
PRX = [\u00A4 \u00B1 \u20AC \u2116 \uFE69 \uFF04 \uFFE1 \uFFE5 \uFFE6];
PR = [[:LineBreak =  Prefix_Numeric:] - PRX];
QU = [[:LineBreak =  Quotation:] - [\u201c\u201d]];
RI = [:LineBreak =  Regional_Indicator:];
SA = [:LineBreak =  Complex_Context:];
SG = [:LineBreak =  Surrogate:];
SP = [:LineBreak =  Space:];
SY = [:LineBreak =  Break_Symbols:];
WJ = [:LineBreak =  Word_Joiner:];
XX = [:LineBreak =  Unknown:];
ZW = [:LineBreak =  ZWSpace:];
ZWJ = [:LineBreak =  ZWJ:];

# OP30 and CP30 are variants of OP and CP that appear in rule LB30 from UAX 14.
# Limitations of this monkey test rule parser require that these definitions be pulled out
# rather than appearing in-line in LB 30.

OP30 = [OP - [\p{ea=F}\p{ea=W}\p{ea=H}]];
CP30 = [CP - [\p{ea=F}\p{ea=W}\p{ea=H}]];

# The redundant-looking inner brackets are required for the current parser in the test code.
ExtPictUnassigned = [[\p{Extended_Pictographic}]&[\p{Cn}]];

# LB1 - Resolve AI, CB, CJ, SA, SG, and XX into other line breaking classes
AL = [AL AI SG XX ];
dictionary = SA;

# By LB9, a ZWJ also behaves as a CM. Including it in the definition of CM avoids having to explicitly
#         list it in the numerous rules that use CM.
CM = [CMS ZWJ];

LB4:        BK ÷;
LB5:        CR LF;
LB5.1:      CR ÷;
LB5.2:      LF ÷;
LB5.3:      NL ÷;

LB6:        . (BK | CR | LF | NL);
LB6.1:      [^BK CR LF NL SP ZW] CM* (BK | CR | LF | NL);

# LB8   break after ZW SP*.
# Precedes LB7 because both rules will match the sequences like ZW SP,
# and LB8 must take precedence.

LB8:        ZW SP* ÷ [^ZW SP BK CR LF NL];

# Numbers. Equivalent to Tailoring example 8 from UAX 14.
# Moved up, before LB14, because it can match longer sequences which must take precedence.
#          Loose_cj tailoring: do not include $PRX at the beginning or $POX at the end.
LB25:        ((PR | PO | POX)CM*)? ((OP | HY)CM*)? (IS CM*)? NU (CM*(NU | SY | IS))* (CM*(CL | CP))? (CM*(PR | PRX | PO))?;

# Rules LB14 - LB17.
# Moved up, before LB7, because they can match a longer sequence that would also match LB7.
# For example, the sequence "OP CM SP AL" matches LB14
# while the prefix of it, "OP CM SP" matches LB7.1
LB14:        OP CM* SP* .;

# LB 14a Break before an IS that begins a number and follows a space.
LB14a:       SP ÷ IS CM* NU;

# LB14b       × IS
LB14b.1:     [^SP] CM* IS;
LB14b.2:     SP IS;

LB15:        QU CM* SP* OP;
LB16:        (CL | CP)CM* SP* NS;
LB17:        B2 CM* SP* B2;


# LB7 Do not break before spaces or zero width space.

LB7.1:      [^ZW SP] CM* [SP ZW];
LB7.2:      [ZW SP] [SP ZW];

# LB8a
#      ZWJ x
#      Don't match a CM on the right - let other rules pick up CM sequences, where
#      the ZWJ behaves as just another generic CM.
LB8a:       ZWJ [^CM];


# LB9:  X CM -> X
# LB10: Unattached CM -> AL

#LB11:       × WJ;
#            WJ ×

LB11.1:      [^SP] CM* WJ;
LB11.2:      SP WJ;
LB11.3:      WJ CM* [^CM];

LB12:        GL CM* [^CM];

LB12a:       [^SP BA BAX HY] CM* GL;

# LB 13 Do not break before ‘]’ or ‘!’ or ‘/’, even after spaces.
LB13.1: [^SP] CM* [CL CP EX SY];
LB13.2: SP [CL CP EX SY];


# LB 14-17 are moved above LB 7.

LB18:        SP ÷;

LB19:        . CM* QU;
LB19.1:      QU CM* [^CM];

# LB 20   Break before and after CB.
#         Interaction with LB8a:  ZWJ x . is tricky because CM includes ZWJ.
#                                 ZWJ acts like a CM to the left, combining with CB.
#                                 ZWJ acts independently to the right, no break after by LB8a.
LB20.1:      . CM* ZWJ CB;
LB20.2:      . CM* ÷ CB;

LB20.3:      CB CM* ZWJ [^CM];
LB20.4:      CB CM* ÷;

# LB 20.09    Don't break between Hyphens and Letters when there is a break preceding the hyphen.
LB20.09:     ^(HY | HH) CM* AL;

# Note: Rule 21a must come before 21 to prevent 21.1 from matching HL BA, then
#       not picking up the continuing match after the BA from 21a.
# LB 21a Don't break after Hebrew + Hyphen
#   HL (HY | BA) x

LB21a:       HL CM* (HY | BA | BAX) CM* [^CM CB]?;

LB21.1:      [^ID] CM* [BA BAX HY NS];
LB21.2:      ID CM* [BA HY NS];
LB21.3:      BB CM* [^CM CB];

LB21b:       SY CM* HL;


LB22:        [^IN] CM* IN;   # For CSS Loose, allow breaks between adjacent ellipses characters.

LB23.1:      (AL | HL | CM) CM* NU;
LB23.2:      NU CM* (AL | HL);

LB23a.1:     PR CM* (ID | EB | EM);
LB23a.2:     (ID | EB | EM) CM* PO;

LB24.2:      (PR | PO | POX) CM* (AL | HL);
LB24.3:      (AL | HL | CM) CM* (PR | PO | POX);


LB26.1:      JL CM* (JL | JV | H2 | H3);
LB26.2:      (JV | H2) CM* (JV | JT);
LB26.3:      (JT | H3) CM* JT;

LB27.1:      (JL | JV | JT | H2 | H3) CM* PO;
LB27.2:      PR CM* (JL | JV | JT | H2 | H3);

# LB28 Do not break between Alphabetics.
#      Unattached (leading) CM treated as AL.
LB28:        (AL | HL | CM)CM* (AL | HL);

LB29:        IS CM* (AL | HL);

# LB30  is adjusted for unattached leading CM being treated as AL.
LB30.1:      (AL | CM | HL | NU) CM* OP30;
LB30.2:      CP30 CM* (AL | HL | NU);

# LB30a  keep pairs of RI together.
LB30a.1:     RI CM* RI         ÷ [^BK CR LF NL SP ZW WJ CL CP EX IS SY GL QU BA BAX HY NS IN CM];
LB30a.2:     RI CM* RI CM* CMS ÷ [^BK CR LF NL SP ZW WJ CL CP EX IS SY GL QU BA BAX HY NS IN CM];
LB30a.3:     RI CM* RI CM* [BK CR LF NL SP ZW WJ GL CL CP EX IS SY QU BA BAX HY NS IN ZWJ]?;

# LB30b Do not break between Emoji Base (or potential emoji) and Emoji Modifier
LB30b.1:       EB CM* EM;
LB30b.2:       ExtPictUnassigned CM* EM;

# LB31 Break Everywhere Else.
#      Include combining marks
LB31.1:        . CM* ZWJ [^CM];
LB31.2:        . CM* ÷;