Merge branch 'bb/unicode-9.0'

The character width table has been updated to match Unicode 9.0

* bb/unicode-9.0:
  unicode_width.h: update the width tables to Unicode 9.0
  update_unicode.sh: remove the plane filter
  update_unicode.sh: automatically download newer definition files
  update_unicode.sh: pin the uniset repo to a known good commit
  update_unicode.sh: remove an unnecessary subshell level
  update_unicode.sh: move it into contrib/update-unicode

.gitignore

@@ -203,7 +203,6 @@
 /config.mak.autogen
 /config.mak.append
 /configure
-/unicode
 /tags
 /TAGS
 /cscope*

contrib/update-unicode/.gitignore

@@ -0,0 +1,3 @@
+uniset/
+UnicodeData.txt
+EastAsianWidth.txt

contrib/update-unicode/README

@@ -0,0 +1,20 @@
+TL;DR: Run update_unicode.sh after the publication of a new Unicode
+standard and commit the resulting unicode_widths.h file.
+
+The long version
+================
+
+The Git source code ships the file unicode_widths.h which contains
+tables of zero and double width Unicode code points, respectively.
+These tables are generated using update_unicode.sh in this directory.
+update_unicode.sh itself uses a third-party tool, uniset, to query two
+Unicode data files for the interesting code points.
+
+On first run, update_unicode.sh clones uniset from Github and builds it.
+This requires a current-ish version of autoconf (2.69 works per December
+2016).
+
+On each run, update_unicode.sh checks whether more recent Unicode data
+files are available from the Unicode consortium, and rebuilds the header
+unicode_widths.h with the new data. The new header can then be
+committed.

contrib/update-unicode/update_unicode.sh

@@ -0,0 +1,33 @@
+#!/bin/sh
+#See http://www.unicode.org/reports/tr44/
+#
+#Me Enclosing_Mark  an enclosing combining mark
+#Mn Nonspacing_Mark a nonspacing combining mark (zero advance width)
+#Cf Format          a format control character
+#
+cd "$(dirname "$0")"
+UNICODEWIDTH_H=$(git rev-parse --show-toplevel)/unicode_width.h
+
+wget -N http://www.unicode.org/Public/UCD/latest/ucd/UnicodeData.txt \
+	http://www.unicode.org/Public/UCD/latest/ucd/EastAsianWidth.txt &&
+if ! test -d uniset; then
+	git clone https://github.com/depp/uniset.git &&
+	( cd uniset && git checkout 4b186196dd )
+fi &&
+(
+	cd uniset &&
+	if ! test -x uniset; then
+		autoreconf -i &&
+		./configure --enable-warnings=-Werror CFLAGS='-O0 -ggdb'
+	fi &&
+	make
+) &&
+UNICODE_DIR=. && export UNICODE_DIR &&
+cat >$UNICODEWIDTH_H <<-EOF
+static const struct interval zero_width[] = {
+	$(uniset/uniset --32 cat:Me,Mn,Cf + U+1160..U+11FF - U+00AD)
+};
+static const struct interval double_width[] = {
+	$(uniset/uniset --32 eaw:F,W)
+};
+EOF

unicode_width.h

@@ -25,7 +25,7 @@ static const struct interval zero_width[] = {
 { 0x0825, 0x0827 },
 { 0x0829, 0x082D },
 { 0x0859, 0x085B },
-{ 0x08E4, 0x0902 },
+{ 0x08D4, 0x0902 },
 { 0x093A, 0x093A },
 { 0x093C, 0x093C },
 { 0x0941, 0x0948 },
@@ -120,6 +120,7 @@ static const struct interval zero_width[] = {
 { 0x17C9, 0x17D3 },
 { 0x17DD, 0x17DD },
 { 0x180B, 0x180E },
+{ 0x1885, 0x1886 },
 { 0x18A9, 0x18A9 },
 { 0x1920, 0x1922 },
 { 0x1927, 0x1928 },
@@ -158,7 +159,7 @@ static const struct interval zero_width[] = {
 { 0x1CF4, 0x1CF4 },
 { 0x1CF8, 0x1CF9 },
 { 0x1DC0, 0x1DF5 },
-{ 0x1DFC, 0x1DFF },
+{ 0x1DFB, 0x1DFF },
 { 0x200B, 0x200F },
 { 0x202A, 0x202E },
 { 0x2060, 0x2064 },
@@ -171,13 +172,13 @@ static const struct interval zero_width[] = {
 { 0x3099, 0x309A },
 { 0xA66F, 0xA672 },
 { 0xA674, 0xA67D },
-{ 0xA69F, 0xA69F },
+{ 0xA69E, 0xA69F },
 { 0xA6F0, 0xA6F1 },
 { 0xA802, 0xA802 },
 { 0xA806, 0xA806 },
 { 0xA80B, 0xA80B },
 { 0xA825, 0xA826 },
-{ 0xA8C4, 0xA8C4 },
+{ 0xA8C4, 0xA8C5 },
 { 0xA8E0, 0xA8F1 },
 { 0xA926, 0xA92D },
 { 0xA947, 0xA951 },
@@ -204,7 +205,7 @@ static const struct interval zero_width[] = {
 { 0xABED, 0xABED },
 { 0xFB1E, 0xFB1E },
 { 0xFE00, 0xFE0F },
-{ 0xFE20, 0xFE2D },
+{ 0xFE20, 0xFE2F },
 { 0xFEFF, 0xFEFF },
 { 0xFFF9, 0xFFFB },
 { 0x101FD, 0x101FD },
@@ -228,30 +229,46 @@ static const struct interval zero_width[] = {
 { 0x11173, 0x11173 },
 { 0x11180, 0x11181 },
 { 0x111B6, 0x111BE },
+{ 0x111CA, 0x111CC },
 { 0x1122F, 0x11231 },
 { 0x11234, 0x11234 },
 { 0x11236, 0x11237 },
+{ 0x1123E, 0x1123E },
 { 0x112DF, 0x112DF },
 { 0x112E3, 0x112EA },
-{ 0x11301, 0x11301 },
+{ 0x11300, 0x11301 },
 { 0x1133C, 0x1133C },
 { 0x11340, 0x11340 },
 { 0x11366, 0x1136C },
 { 0x11370, 0x11374 },
+{ 0x11438, 0x1143F },
+{ 0x11442, 0x11444 },
+{ 0x11446, 0x11446 },
 { 0x114B3, 0x114B8 },
 { 0x114BA, 0x114BA },
 { 0x114BF, 0x114C0 },
 { 0x114C2, 0x114C3 },
 { 0x115B2, 0x115B5 },
 { 0x115BC, 0x115BD },
 { 0x115BF, 0x115C0 },
+{ 0x115DC, 0x115DD },
 { 0x11633, 0x1163A },
 { 0x1163D, 0x1163D },
 { 0x1163F, 0x11640 },
 { 0x116AB, 0x116AB },
 { 0x116AD, 0x116AD },
 { 0x116B0, 0x116B5 },
 { 0x116B7, 0x116B7 },
+{ 0x1171D, 0x1171F },
+{ 0x11722, 0x11725 },
+{ 0x11727, 0x1172B },
+{ 0x11C30, 0x11C36 },
+{ 0x11C38, 0x11C3D },
+{ 0x11C3F, 0x11C3F },
+{ 0x11C92, 0x11CA7 },
+{ 0x11CAA, 0x11CB0 },
+{ 0x11CB2, 0x11CB3 },
+{ 0x11CB5, 0x11CB6 },
 { 0x16AF0, 0x16AF4 },
 { 0x16B30, 0x16B36 },
 { 0x16F8F, 0x16F92 },
@@ -262,31 +279,59 @@ static const struct interval zero_width[] = {
 { 0x1D185, 0x1D18B },
 { 0x1D1AA, 0x1D1AD },
 { 0x1D242, 0x1D244 },
+{ 0x1DA00, 0x1DA36 },
+{ 0x1DA3B, 0x1DA6C },
+{ 0x1DA75, 0x1DA75 },
+{ 0x1DA84, 0x1DA84 },
+{ 0x1DA9B, 0x1DA9F },
+{ 0x1DAA1, 0x1DAAF },
+{ 0x1E000, 0x1E006 },
+{ 0x1E008, 0x1E018 },
+{ 0x1E01B, 0x1E021 },
+{ 0x1E023, 0x1E024 },
+{ 0x1E026, 0x1E02A },
 { 0x1E8D0, 0x1E8D6 },
+{ 0x1E944, 0x1E94A },
 { 0xE0001, 0xE0001 },
 { 0xE0020, 0xE007F },
 { 0xE0100, 0xE01EF }
 };
 static const struct interval double_width[] = {
-{ /* plane */ 0x0, 0x1C },
-{ /* plane */ 0x1C, 0x21 },
-{ /* plane */ 0x21, 0x22 },
-{ /* plane */ 0x22, 0x23 },
-{ /* plane */ 0x0, 0x0 },
-{ /* plane */ 0x0, 0x0 },
-{ /* plane */ 0x0, 0x0 },
-{ /* plane */ 0x0, 0x0 },
-{ /* plane */ 0x0, 0x0 },
-{ /* plane */ 0x0, 0x0 },
-{ /* plane */ 0x0, 0x0 },
-{ /* plane */ 0x0, 0x0 },
-{ /* plane */ 0x0, 0x0 },
-{ /* plane */ 0x0, 0x0 },
-{ /* plane */ 0x0, 0x0 },
-{ /* plane */ 0x0, 0x0 },
-{ /* plane */ 0x0, 0x0 },
 { 0x1100, 0x115F },
+{ 0x231A, 0x231B },
 { 0x2329, 0x232A },
+{ 0x23E9, 0x23EC },
+{ 0x23F0, 0x23F0 },
+{ 0x23F3, 0x23F3 },
+{ 0x25FD, 0x25FE },
+{ 0x2614, 0x2615 },
+{ 0x2648, 0x2653 },
+{ 0x267F, 0x267F },
+{ 0x2693, 0x2693 },
+{ 0x26A1, 0x26A1 },
+{ 0x26AA, 0x26AB },
+{ 0x26BD, 0x26BE },
+{ 0x26C4, 0x26C5 },
+{ 0x26CE, 0x26CE },
+{ 0x26D4, 0x26D4 },
+{ 0x26EA, 0x26EA },
+{ 0x26F2, 0x26F3 },
+{ 0x26F5, 0x26F5 },
+{ 0x26FA, 0x26FA },
+{ 0x26FD, 0x26FD },
+{ 0x2705, 0x2705 },
+{ 0x270A, 0x270B },
+{ 0x2728, 0x2728 },
+{ 0x274C, 0x274C },
+{ 0x274E, 0x274E },
+{ 0x2753, 0x2755 },
+{ 0x2757, 0x2757 },
+{ 0x2795, 0x2797 },
+{ 0x27B0, 0x27B0 },
+{ 0x27BF, 0x27BF },
+{ 0x2B1B, 0x2B1C },
+{ 0x2B50, 0x2B50 },
+{ 0x2B55, 0x2B55 },
 { 0x2E80, 0x2E99 },
 { 0x2E9B, 0x2EF3 },
 { 0x2F00, 0x2FD5 },
@@ -313,11 +358,49 @@ static const struct interval double_width[] = {
 { 0xFE68, 0xFE6B },
 { 0xFF01, 0xFF60 },
 { 0xFFE0, 0xFFE6 },
+{ 0x16FE0, 0x16FE0 },
+{ 0x17000, 0x187EC },
+{ 0x18800, 0x18AF2 },
 { 0x1B000, 0x1B001 },
+{ 0x1F004, 0x1F004 },
+{ 0x1F0CF, 0x1F0CF },
+{ 0x1F18E, 0x1F18E },
+{ 0x1F191, 0x1F19A },
 { 0x1F200, 0x1F202 },
-{ 0x1F210, 0x1F23A },
+{ 0x1F210, 0x1F23B },
 { 0x1F240, 0x1F248 },
 { 0x1F250, 0x1F251 },
+{ 0x1F300, 0x1F320 },
+{ 0x1F32D, 0x1F335 },
+{ 0x1F337, 0x1F37C },
+{ 0x1F37E, 0x1F393 },
+{ 0x1F3A0, 0x1F3CA },
+{ 0x1F3CF, 0x1F3D3 },
+{ 0x1F3E0, 0x1F3F0 },
+{ 0x1F3F4, 0x1F3F4 },
+{ 0x1F3F8, 0x1F43E },
+{ 0x1F440, 0x1F440 },
+{ 0x1F442, 0x1F4FC },
+{ 0x1F4FF, 0x1F53D },
+{ 0x1F54B, 0x1F54E },
+{ 0x1F550, 0x1F567 },
+{ 0x1F57A, 0x1F57A },
+{ 0x1F595, 0x1F596 },
+{ 0x1F5A4, 0x1F5A4 },
+{ 0x1F5FB, 0x1F64F },
+{ 0x1F680, 0x1F6C5 },
+{ 0x1F6CC, 0x1F6CC },
+{ 0x1F6D0, 0x1F6D2 },
+{ 0x1F6EB, 0x1F6EC },
+{ 0x1F6F4, 0x1F6F6 },
+{ 0x1F910, 0x1F91E },
+{ 0x1F920, 0x1F927 },
+{ 0x1F930, 0x1F930 },
+{ 0x1F933, 0x1F93E },
+{ 0x1F940, 0x1F94B },
+{ 0x1F950, 0x1F95E },
+{ 0x1F980, 0x1F991 },
+{ 0x1F9C0, 0x1F9C0 },
 { 0x20000, 0x2FFFD },
 { 0x30000, 0x3FFFD }
 };