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Fix auto-sized glyphs with BaKoMa fonts
If the larger glyphs for an auto-sized character in `cmex10` uses a character that is in the `latex_to_bakoma` table, then it will be mapped an extra time into `cmr10` (usually). Thus we end up with a large version of a "normal" character, such as an exclamation point. Instead map these glyphs through the `latex_to_bakoma` table by using their glyph names as "commands". This ensures they don't get double-mapped to the wrong font and fixes the following issues: - slash (/) uses a comma at the larger sizes - right parenthesis uses an exclamation point at the largest size - left and right braces use parentheses at the largest size - right floor uses a percentage sign at the largest size - left ceiling uses an ampersand at the largest size Also, drop the regular size braces, as they are the same as the first `big`-sized version.
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‎lib/matplotlib/_mathtext.py

+29-49
Original file line numberDiff line numberDiff line change
@@ -473,57 +473,37 @@ def _get_glyph(self, fontname: str, font_class: str,
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# The Bakoma fonts contain many pre-sized alternatives for the
474474
# delimiters. The AutoSizedChar class will use these alternatives
475475
# and select the best (closest sized) glyph.
476+
_latex_sizes = ('big', 'Big', 'bigg', 'Bigg')
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_size_alternatives = {
477-
'(': [('rm', '('), ('ex', '\xa1'), ('ex', '\xb3'),
478-
('ex', '\xb5'), ('ex', '\xc3')],
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')': [('rm', ')'), ('ex', '\xa2'), ('ex', '\xb4'),
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('ex', '\xb6'), ('ex', '\x21')],
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'{': [('cal', '{'), ('ex', '\xa9'), ('ex', '\x6e'),
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('ex', '\xbd'), ('ex', '\x28')],
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'}': [('cal', '}'), ('ex', '\xaa'), ('ex', '\x6f'),
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('ex', '\xbe'), ('ex', '\x29')],
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# The fourth size of '[' is mysteriously missing from the BaKoMa
486-
# font, so I've omitted it for both '[' and ']'
487-
'[': [('rm', '['), ('ex', '\xa3'), ('ex', '\x68'),
488-
('ex', '\x22')],
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']': [('rm', ']'), ('ex', '\xa4'), ('ex', '\x69'),
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('ex', '\x23')],
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r'\lfloor': [('ex', '\xa5'), ('ex', '\x6a'),
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('ex', '\xb9'), ('ex', '\x24')],
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r'\rfloor': [('ex', '\xa6'), ('ex', '\x6b'),
494-
('ex', '\xba'), ('ex', '\x25')],
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r'\lceil': [('ex', '\xa7'), ('ex', '\x6c'),
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('ex', '\xbb'), ('ex', '\x26')],
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r'\rceil': [('ex', '\xa8'), ('ex', '\x6d'),
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('ex', '\xbc'), ('ex', '\x27')],
499-
r'\langle': [('ex', '\xad'), ('ex', '\x44'),
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('ex', '\xbf'), ('ex', '\x2a')],
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r'\rangle': [('ex', '\xae'), ('ex', '\x45'),
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('ex', '\xc0'), ('ex', '\x2b')],
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r'\__sqrt__': [('ex', '\x70'), ('ex', '\x71'),
504-
('ex', '\x72'), ('ex', '\x73')],
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r'\backslash': [('ex', '\xb2'), ('ex', '\x2f'),
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('ex', '\xc2'), ('ex', '\x2d')],
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r'/': [('rm', '/'), ('ex', '\xb1'), ('ex', '\x2e'),
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('ex', '\xcb'), ('ex', '\x2c')],
509-
r'\widehat': [('rm', '\x5e'), ('ex', '\x62'), ('ex', '\x63'),
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('ex', '\x64')],
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r'\widetilde': [('rm', '\x7e'), ('ex', '\x65'), ('ex', '\x66'),
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('ex', '\x67')],
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r'<': [('cal', 'h'), ('ex', 'D')],
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r'>': [('cal', 'i'), ('ex', 'E')]
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}
478+
'(': [('rm', '('), *[('ex', fr'\parenleft{s}') for s in _latex_sizes]],
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')': [('rm', ')'), *[('ex', fr'\parenright{s}') for s in _latex_sizes]],
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'{': [*[('ex', fr'\braceleft{s}') for s in _latex_sizes]],
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'}': [*[('ex', fr'\braceright{s}') for s in _latex_sizes]],
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'[': [('rm', '['), *[('ex', fr'\bracketleft{s}') for s in _latex_sizes]],
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']': [('rm', ']'), *[('ex', fr'\bracketright{s}') for s in _latex_sizes]],
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'<': [('cal', r'\angbracketleft'),
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*[('ex', fr'\angbracketleft{s}') for s in _latex_sizes]],
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'>': [('cal', r'\angbracketright'),
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*[('ex', fr'\angbracketright{s}') for s in _latex_sizes]],
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r'\lfloor': [('ex', fr'\floorleft{s}') for s in _latex_sizes],
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r'\rfloor': [('ex', fr'\floorright{s}') for s in _latex_sizes],
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r'\lceil': [('ex', fr'\ceilingleft{s}') for s in _latex_sizes],
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r'\rceil': [('ex', fr'\ceilingright{s}') for s in _latex_sizes],
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r'\__sqrt__': [('ex', fr'\radical{s}') for s in _latex_sizes],
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r'\backslash': [('ex', fr'\backslash{s}') for s in _latex_sizes],
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r'/': [('rm', '/'), *[('ex', fr'\slash{s}') for s in _latex_sizes]],
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r'\widehat': [('rm', '\x5e'), ('ex', r'\hatwide'), ('ex', r'\hatwider'),
496+
('ex', r'\hatwidest')],
497+
r'\widetilde': [('rm', '\x7e'), ('ex', r'\tildewide'), ('ex', r'\tildewider'),
498+
('ex', r'\tildewidest')],
499+
}
516500

517-
for alias, target in [(r'\leftparen', '('),
518-
(r'\rightparen', ')'),
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(r'\leftbrace', '{'),
520-
(r'\rightbrace', '}'),
521-
(r'\leftbracket', '['),
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(r'\rightbracket', ']'),
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(r'\{', '{'),
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(r'\}', '}'),
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(r'\[', '['),
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(r'\]', ']')]:
501+
for alias, target in [(r'\leftparen', '('), (r'\rightparen', ')'),
502+
(r'\leftbrace', '{'), (r'\rightbrace', '}'),
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(r'\leftbracket', '['), (r'\rightbracket', ']'),
504+
(r'\langle', '<'), (r'\rangle', '>'),
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(r'\{', '{'), (r'\}', '}'),
506+
(r'\[', '['), (r'\]', ']')]:
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_size_alternatives[alias] = _size_alternatives[target]
528508

529509
def get_sized_alternatives_for_symbol(self, fontname: str,

‎lib/matplotlib/_mathtext_data.py

+71
Original file line numberDiff line numberDiff line change
@@ -33,6 +33,75 @@
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'{' : ('cmex10', 0xa9),
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'}' : ('cmex10', 0xaa),
3535

36+
'\\angbracketleft' : ('cmsy10', 0x68),
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'\\angbracketright' : ('cmsy10', 0x69),
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'\\angbracketleftbig' : ('cmex10', 0xad),
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'\\angbracketleftBig' : ('cmex10', 0x44),
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'\\angbracketleftbigg' : ('cmex10', 0xbf),
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'\\angbracketleftBigg' : ('cmex10', 0x2a),
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'\\angbracketrightbig' : ('cmex10', 0xae),
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'\\angbracketrightBig' : ('cmex10', 0x45),
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'\\angbracketrightbigg' : ('cmex10', 0xc0),
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'\\angbracketrightBigg' : ('cmex10', 0x2b),
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'\\backslashbig' : ('cmex10', 0xb2),
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'\\backslashBig' : ('cmex10', 0x2f),
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'\\backslashbigg' : ('cmex10', 0xc2),
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'\\backslashBigg' : ('cmex10', 0x2d),
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'\\braceleftbig' : ('cmex10', 0xa9),
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'\\braceleftBig' : ('cmex10', 0x6e),
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'\\braceleftbigg' : ('cmex10', 0xbd),
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'\\braceleftBigg' : ('cmex10', 0x28),
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'\\bracerightbig' : ('cmex10', 0xaa),
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'\\bracerightBig' : ('cmex10', 0x6f),
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'\\bracerightbigg' : ('cmex10', 0xbe),
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'\\bracerightBigg' : ('cmex10', 0x29),
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'\\bracketleftbig' : ('cmex10', 0xa3),
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'\\bracketleftBig' : ('cmex10', 0x68),
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'\\bracketleftbigg' : ('cmex10', 0x2219),
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'\\bracketleftBigg' : ('cmex10', 0x22),
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'\\bracketrightbig' : ('cmex10', 0xa4),
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'\\bracketrightBig' : ('cmex10', 0x69),
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'\\bracketrightbigg' : ('cmex10', 0xb8),
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'\\bracketrightBigg' : ('cmex10', 0x23),
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'\\ceilingleftbig' : ('cmex10', 0xa7),
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'\\ceilingleftBig' : ('cmex10', 0x6c),
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'\\ceilingleftbigg' : ('cmex10', 0xbb),
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'\\ceilingleftBigg' : ('cmex10', 0x26),
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'\\ceilingrightbig' : ('cmex10', 0xa8),
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'\\ceilingrightBig' : ('cmex10', 0x6d),
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'\\ceilingrightbigg' : ('cmex10', 0xbc),
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'\\ceilingrightBigg' : ('cmex10', 0x27),
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'\\floorleftbig' : ('cmex10', 0xa5),
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'\\floorleftBig' : ('cmex10', 0x6a),
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'\\floorleftbigg' : ('cmex10', 0xb9),
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'\\floorleftBigg' : ('cmex10', 0x24),
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'\\floorrightbig' : ('cmex10', 0xa6),
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'\\floorrightBig' : ('cmex10', 0x6b),
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'\\floorrightbigg' : ('cmex10', 0xba),
81+
'\\floorrightBigg' : ('cmex10', 0x25),
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'\\hatwide' : ('cmex10', 0x62),
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'\\hatwider' : ('cmex10', 0x63),
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'\\hatwidest' : ('cmex10', 0x64),
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'\\parenleftbig' : ('cmex10', 0xa1),
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'\\parenleftBig' : ('cmex10', 0xb3),
87+
'\\parenleftbigg' : ('cmex10', 0xb5),
88+
'\\parenleftBigg' : ('cmex10', 0xc3),
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'\\parenrightbig' : ('cmex10', 0xa2),
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'\\parenrightBig' : ('cmex10', 0xb4),
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'\\parenrightbigg' : ('cmex10', 0xb6),
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'\\parenrightBigg' : ('cmex10', 0x21),
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'\\radicalbig' : ('cmex10', 0x70),
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'\\radicalBig' : ('cmex10', 0x71),
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'\\radicalbigg' : ('cmex10', 0x72),
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'\\radicalBigg' : ('cmex10', 0x73),
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'\\slashbig' : ('cmex10', 0xb1),
98+
'\\slashBig' : ('cmex10', 0x2e),
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'\\slashbigg' : ('cmex10', 0xc1),
100+
'\\slashBigg' : ('cmex10', 0x2c),
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'\\tildewide' : ('cmex10', 0x65),
102+
'\\tildewider' : ('cmex10', 0x66),
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'\\tildewidest' : ('cmex10', 0x67),
104+
36105
',' : ('cmmi10', 0x3b),
37106
'.' : ('cmmi10', 0x3a),
38107
'/' : ('cmmi10', 0x3d),
@@ -1109,6 +1178,8 @@
11091178
'|' : 0x2016,
11101179
'}' : 0x7d,
11111180
}
1181+
tex2uni['angbracketleft'] = tex2uni['langle']
1182+
tex2uni['angbracketright'] = tex2uni['rangle']
11121183

11131184
# Each element is a 4-tuple of the form:
11141185
# src_start, src_end, dst_font, dst_start

‎lib/matplotlib/tests/baseline_images/test_mathtext/mathtext_cm_37.pdf

-157 Bytes
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‎lib/matplotlib/tests/baseline_images/test_mathtext/mathtext_cm_37.png

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