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Commit0bd9c62

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committed
Treat Unicode codepoints of category "Format" as non-spacing
Commitd8594d1 updated the list of non-spacing codepoints usedfor calculating display width, but in doing so inadvertently removedsome, since the script used for that commit only considered combiningcharacters.For complete coverage for zero-width characters, include codepoints inthe category Cf (Format). To reflect the wider purpose, also rename filesand update comments that referred specifically to combining characters.Some of these ranges have been missing since v12, but due to lack offield complaints it was determined not important enough to justify addingspecial-case logic the backbranches.Kyotaro HoriguchiReport by Pavel StehuleDiscussion:https://www.postgresql.org/message-id/flat/CAFj8pRBE8yvpQ0FSkPCoe0Ny1jAAsAQ6j3qMgVwWvkqAoaaNmQ%40mail.gmail.com
1 parentbb629c2 commit0bd9c62

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4 files changed

+34
-23
lines changed

4 files changed

+34
-23
lines changed

‎src/common/unicode/Makefile

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -18,7 +18,7 @@ LIBS += $(PTHREAD_LIBS)
1818
# By default, do nothing.
1919
all:
2020

21-
update-unicode: unicode_norm_table.hunicode_combining_table.h unicode_east_asian_fw_table.h unicode_normprops_table.h unicode_norm_hashfunc.h
21+
update-unicode: unicode_norm_table.hunicode_nonspacing_table.h unicode_east_asian_fw_table.h unicode_normprops_table.h unicode_norm_hashfunc.h
2222
mv$^$(top_srcdir)/src/include/common/
2323
$(MAKE) normalization-check
2424

@@ -35,7 +35,7 @@ unicode_norm_hashfunc.h: unicode_norm_table.h
3535
unicode_norm_table.h: generate-unicode_norm_table.pl UnicodeData.txt CompositionExclusions.txt
3636
$(PERL)$<
3737

38-
unicode_combining_table.h: generate-unicode_combining_table.pl UnicodeData.txt
38+
unicode_nonspacing_table.h: generate-unicode_nonspacing_table.pl UnicodeData.txt
3939
$(PERL)$^>$@
4040

4141
unicode_east_asian_fw_table.h: generate-unicode_east_asian_fw_table.pl EastAsianWidth.txt

‎src/common/unicode/generate-unicode_combining_table.plrenamed to‎src/common/unicode/generate-unicode_nonspacing_table.pl

Lines changed: 7 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -15,27 +15,29 @@
1515
my$count = 0;
1616

1717
print
18-
"/* generated by src/common/unicode/generate-unicode_combining_table.pl, do not edit */\n\n";
18+
"/* generated by src/common/unicode/generate-unicode_nonspacing_table.pl, do not edit */\n\n";
1919

20-
print"static const struct mbintervalcombining[] = {\n";
20+
print"static const struct mbintervalnonspacing[] = {\n";
2121

2222
foreachmy$line (<ARGV>)
2323
{
2424
chomp$line;
2525
my@fields =split';',$line;
2626
$codepoint =hex$fields[0];
2727

28-
if ($fields[2]eq'Me' ||$fields[2]eq'Mn')
28+
# Me and Mn refer to combining characters
29+
# Cf refers to format characters
30+
if ($fields[2]eq'Me' ||$fields[2]eq'Mn' ||$fields[2]eq'Cf')
2931
{
30-
#combining character, save for start of range
32+
#non-spacing character, save for start of range
3133
if (!defined($range_start))
3234
{
3335
$range_start =$codepoint;
3436
}
3537
}
3638
else
3739
{
38-
# not acombining character, print out previous range if any
40+
# not anon-spacing character, print out previous range if any
3941
if (defined($range_start))
4042
{
4143
printf"\t{0x%04X, 0x%04X},\n",$range_start,$prev_codepoint;

‎src/common/wchar.c

Lines changed: 4 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -620,7 +620,7 @@ mbbisearch(pg_wchar ucs, const struct mbinterval *table, int max)
620620
*value of -1.
621621
*
622622
* - Non-spacing and enclosing combining characters (general
623-
*category code MnorMe in the Unicode database) have a
623+
*category code Mn, MeorCf in the Unicode database) have a
624624
*column width of 0.
625625
*
626626
* - Spacing characters in the East Asian Wide (W) or East Asian
@@ -638,7 +638,7 @@ mbbisearch(pg_wchar ucs, const struct mbinterval *table, int max)
638638
staticint
639639
ucs_wcwidth(pg_wcharucs)
640640
{
641-
#include"common/unicode_combining_table.h"
641+
#include"common/unicode_nonspacing_table.h"
642642
#include"common/unicode_east_asian_fw_table.h"
643643

644644
/* test for 8-bit control characters */
@@ -657,8 +657,8 @@ ucs_wcwidth(pg_wchar ucs)
657657
* factor for display width leads to the correct behavior, so do that
658658
* search first.
659659
*/
660-
if (mbbisearch(ucs,combining,
661-
sizeof(combining) /sizeof(structmbinterval)-1))
660+
if (mbbisearch(ucs,nonspacing,
661+
sizeof(nonspacing) /sizeof(structmbinterval)-1))
662662
return0;
663663

664664
/* binary search in table of wide characters */

‎src/include/common/unicode_combining_table.hrenamed to‎src/include/common/unicode_nonspacing_table.h

Lines changed: 21 additions & 12 deletions
Original file line numberDiff line numberDiff line change
@@ -1,20 +1,24 @@
1-
/* generated by src/common/unicode/generate-unicode_combining_table.pl, do not edit */
1+
/* generated by src/common/unicode/generate-unicode_nonspacing_table.pl, do not edit */
22

3-
staticconststructmbintervalcombining[]= {
3+
staticconststructmbintervalnonspacing[]= {
4+
{0x00AD,0x00AD},
45
{0x0300,0x036F},
56
{0x0483,0x0489},
67
{0x0591,0x05BD},
78
{0x05BF,0x05BF},
89
{0x05C1,0x05C2},
910
{0x05C4,0x05C5},
1011
{0x05C7,0x05C7},
12+
{0x0600,0x0605},
1113
{0x0610,0x061A},
14+
{0x061C,0x061C},
1215
{0x064B,0x065F},
1316
{0x0670,0x0670},
14-
{0x06D6,0x06DC},
17+
{0x06D6,0x06DD},
1518
{0x06DF,0x06E4},
1619
{0x06E7,0x06E8},
1720
{0x06EA,0x06ED},
21+
{0x070F,0x070F},
1822
{0x0711,0x0711},
1923
{0x0730,0x074A},
2024
{0x07A6,0x07B0},
@@ -25,9 +29,8 @@ static const struct mbinterval combining[] = {
2529
{0x0825,0x0827},
2630
{0x0829,0x082D},
2731
{0x0859,0x085B},
28-
{0x0898,0x089F},
29-
{0x08CA,0x08E1},
30-
{0x08E3,0x0902},
32+
{0x0890,0x089F},
33+
{0x08CA,0x0902},
3134
{0x093A,0x093A},
3235
{0x093C,0x093C},
3336
{0x0941,0x0948},
@@ -114,8 +117,7 @@ static const struct mbinterval combining[] = {
114117
{0x17C6,0x17C6},
115118
{0x17C9,0x17D3},
116119
{0x17DD,0x17DD},
117-
{0x180B,0x180D},
118-
{0x180F,0x180F},
120+
{0x180B,0x180F},
119121
{0x1885,0x1886},
120122
{0x18A9,0x18A9},
121123
{0x1920,0x1922},
@@ -152,6 +154,9 @@ static const struct mbinterval combining[] = {
152154
{0x1CF4,0x1CF4},
153155
{0x1CF8,0x1CF9},
154156
{0x1DC0,0x1DFF},
157+
{0x200B,0x200F},
158+
{0x202A,0x202E},
159+
{0x2060,0x206F},
155160
{0x20D0,0x20F0},
156161
{0x2CEF,0x2CF1},
157162
{0x2D7F,0x2D7F},
@@ -196,6 +201,8 @@ static const struct mbinterval combining[] = {
196201
{0xFB1E,0xFB1E},
197202
{0xFE00,0xFE0F},
198203
{0xFE20,0xFE2F},
204+
{0xFEFF,0xFEFF},
205+
{0xFFF9,0xFFFB},
199206
{0x101FD,0x101FD},
200207
{0x102E0,0x102E0},
201208
{0x10376,0x1037A},
@@ -213,7 +220,8 @@ static const struct mbinterval combining[] = {
213220
{0x1107F,0x11081},
214221
{0x110B3,0x110B6},
215222
{0x110B9,0x110BA},
216-
{0x110C2,0x110C2},
223+
{0x110BD,0x110BD},
224+
{0x110C2,0x110CD},
217225
{0x11100,0x11102},
218226
{0x11127,0x1112B},
219227
{0x1112D,0x11134},
@@ -281,15 +289,16 @@ static const struct mbinterval combining[] = {
281289
{0x11D95,0x11D95},
282290
{0x11D97,0x11D97},
283291
{0x11EF3,0x11EF4},
292+
{0x13430,0x13438},
284293
{0x16AF0,0x16AF4},
285294
{0x16B30,0x16B36},
286295
{0x16F4F,0x16F4F},
287296
{0x16F8F,0x16F92},
288297
{0x16FE4,0x16FE4},
289298
{0x1BC9D,0x1BC9E},
290-
{0x1CF00,0x1CF46},
299+
{0x1BCA0,0x1CF46},
291300
{0x1D167,0x1D169},
292-
{0x1D17B,0x1D182},
301+
{0x1D173,0x1D182},
293302
{0x1D185,0x1D18B},
294303
{0x1D1AA,0x1D1AD},
295304
{0x1D242,0x1D244},
@@ -304,5 +313,5 @@ static const struct mbinterval combining[] = {
304313
{0x1E2EC,0x1E2EF},
305314
{0x1E8D0,0x1E8D6},
306315
{0x1E944,0x1E94A},
307-
{0xE0100,0xE01EF},
316+
{0xE0001,0xE01EF},
308317
};

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