From 0949b314adb849b2c78be1955ab62e03a901e140 Mon Sep 17 00:00:00 2001
From: Oscar Gustafsson <oscar.gustafsson@gmail.com>
Date: Fri, 23 Jun 2023 15:27:51 +0200
Subject: [PATCH] Add more sizeable delimiters

---
 doc/users/next_whats_new/mathtext_delimiters.rst |  14 ++++++++++++++
 lib/matplotlib/_mathtext.py                      |   8 ++++++--
 lib/matplotlib/_mathtext_data.py                 |   4 +++-
 .../test_mathtext/mathtext1_dejavusans_06.png    | Bin 0 -> 4782 bytes
 lib/matplotlib/tests/test_mathtext.py            |   1 +
 5 files changed, 24 insertions(+), 3 deletions(-)
 create mode 100644 doc/users/next_whats_new/mathtext_delimiters.rst
 create mode 100644 lib/matplotlib/tests/baseline_images/test_mathtext/mathtext1_dejavusans_06.png

diff --git a/doc/users/next_whats_new/mathtext_delimiters.rst b/doc/users/next_whats_new/mathtext_delimiters.rst
new file mode 100644
index 000000000000..7c1c29f4b9ec
--- /dev/null
+++ b/doc/users/next_whats_new/mathtext_delimiters.rst
@@ -0,0 +1,14 @@
+``mathtext`` has more sizable delimiters
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+The ``\lgroup`` and ``\rgroup`` sizable delimiters have been added.
+
+The following delimiter names have been supported earlier, but can now be sized with
+``\left`` and ``\right``:
+
+* ``\lbrace``, ``\rbrace``, ``\leftbrace``, and ``\rightbrace``
+* ``\lbrack`` and ``\rbrack``
+* ``\leftparen`` and ``\rightparen``
+
+There are really no obvious advantages in using these.
+Instead, they are are added for completeness.
diff --git a/lib/matplotlib/_mathtext.py b/lib/matplotlib/_mathtext.py
index b1942d0c98e4..35f7f1c606cf 100644
--- a/lib/matplotlib/_mathtext.py
+++ b/lib/matplotlib/_mathtext.py
@@ -1808,8 +1808,12 @@ class _MathStyle(enum.Enum):
     _ambi_delims = set(r"""
       | \| / \backslash \uparrow \downarrow \updownarrow \Uparrow
       \Downarrow \Updownarrow . \vert \Vert""".split())
-    _left_delims = set(r"( [ \{ < \lfloor \langle \lceil".split())
-    _right_delims = set(r") ] \} > \rfloor \rangle \rceil".split())
+    _left_delims = set(r"""
+      ( [ \{ < \lfloor \langle \lceil \lbrace \leftbrace \lbrack \leftparen \lgroup
+      """.split())
+    _right_delims = set(r"""
+      ) ] \} > \rfloor \rangle \rceil \rbrace \rightbrace \rbrack \rightparen \rgroup
+      """.split())
     _delims = _left_delims | _right_delims | _ambi_delims
 
     _small_greek = set([unicodedata.name(chr(i)).split()[-1].lower() for i in
diff --git a/lib/matplotlib/_mathtext_data.py b/lib/matplotlib/_mathtext_data.py
index 84136ffe8b3e..40ba4f96f103 100644
--- a/lib/matplotlib/_mathtext_data.py
+++ b/lib/matplotlib/_mathtext_data.py
@@ -957,6 +957,8 @@
     'cwopencirclearrow'        : 8635,
     'geqq'                     : 8807,
     'rightleftarrows'          : 8644,
+    'lgroup'                   : 0x27EE,
+    'rgroup'                   : 0x27EF,
     'aa'                       : 229,
     'ac'                       : 8766,
     'ae'                       : 230,
@@ -1016,7 +1018,7 @@
     'leftparen'                : 40,
     'rightparen'               : 41,
     'bigoplus'                 : 10753,
-    'leftbrace'                : 124,
+    'leftbrace'                : 123,
     'rightbrace'               : 125,
     'jmath'                    : 567,
     'bigodot'                  : 10752,
diff --git a/lib/matplotlib/tests/baseline_images/test_mathtext/mathtext1_dejavusans_06.png b/lib/matplotlib/tests/baseline_images/test_mathtext/mathtext1_dejavusans_06.png
new file mode 100644
index 0000000000000000000000000000000000000000..85d0adf15112e8e22b97ff1442f61f61a6f96602
GIT binary patch
literal 4782
zcmc&&WmHsQyFGL$jWp6A-Q6A1(xr66&;n9JOA3N0C`buXA|WAN0s;a9NT+~+g!GKS
z_j2!A_uu_@*SfRT^qe#AyPy5+y`Ph)ud7agPlFFZ5P_zKiXjA{6M)wbak0VUaa{d(
z@TB9fYUcmQ+sQx3*4GizvGs>}c>8;}+A#(?`ue$gdkOPN@CooaI0g!eiwbZ%+l$*f
z3W<n{I@<9ty7>FU{G|B#J^$w*K5t)V{^?TmJ#b<?n1;C@1QFTZ-qFhBKe$2=DUPO!
zqS4d5Ka0WIMl<s`hx`xlx$rF-B2~wqTVR>?P7^d#^U_!me=!qjH1SbX@KBxS+W+}n
zOF5~O8DGW19$_Ye)kU00;tzFs!u0QWCBOylGB2DHEj7!>y|&$l=1e;BdyALqzBk)X
zpuS6v$quLxW1^{m8+Ok1BnBfhbKwm(HUW6giWiN|%*>n-qliI5LZaDS5S5USz-s$L
z0eqJs-~xWhtVtz8OhWR4^)3zgN`v(O_ONfbGc}LZ_4SEu+CoZ<8)2(TbdtW9j*gBQ
zNJFkHiz`+R4i-sCb3@dRANp2pA;yN*%!Q?$1yLG>2?@AQLqmIddN4+E#b>z2Mo0Vq
zT^^6O1h{KnRhiYI6Wy2j(Iggf;<C^hM3k7Ah&|uh(qcFAM)c<=+vs{)MrJowuocqc
zk`mi1<f%j$QUsgmK2P&vg=vjI7}DQk_OogQkGwnsek?lb{6Jk(Gx6!-)YQFrA_lRa
z=bvnQVEYS_#l^)d+v7zU11c&AeSi<^&z1o0Y+lQ_^QF+SvcT2VRSiA8fur>S(P~p8
zBSvoSJAHk9+lX?qfB*jV3Y8cp!r|zeSGliW-!9?e8g-CDLrG$w3~(1J`23ml=;#O*
z5Fq-|+Q&z*(R(>nIi8S-g9FFd*x1h8$%$P?R(5rNpOA=%NGANB84npI+SJrkhWx<b
zAf9hC-R$hFT1r~NH#4xVyG>yzv7zDN@sGybMRQm<IQD0IvoJqD<vOPk*zPoMEsv}$
zJs}|>6zR7$+BGtw!{Y~oMQW8~{FCIhY{Y~d9381e<*W;fif9)Ha$(1tI##WLI_nl;
z4;3XPB}1Y=-l61MS?!6ham-WkrUkHK%Y>ZZDvV^njR1V=sdQb)(_LFTJGfjJl97c)
znMY4gFJ7BnSwR6xy)TQ;z`#)ZeP{^3y}dmlH8uO>^^R0Z*x}X5q#n%I*UgB*8?N-e
z^K0<&j|O+slwD*t94c_1sWxkZF>UxZo6HU{L?m~1DimFZB`z7yajvKozyJD`4oXIz
zGEh+^0Q6Y^XwVZ+&y?@qwVwtDqm>1dVL&!tpQ1f{_^|5C#Kh#=@UXI@V~Ip&L0X8F
zR*B)?iybW;oxVEfvFlSsWl(}!s1FWmj@rs!!3zru1ssRSjf{=oo7Xwn1@BH*9gT=D
zcTP@{z2bj7{Xke)xaYIuFfsUV+0e7EgY!(tu~lu17ic^G;6p=Nnx~H*J$jLz9vOPR
z&-CB{uA-u1Q^bv&kg#yW&JI46*29OjKI>{cHeabc=jsJ7f_K{PCl5xKRkgIxL`6j%
zo}PN@qr^Fdgh<a1mIsolg+;1ozK|D-dCrO4Vva*}AHn4p5YV?ikmmDiC~HP6u<#2S
z=<!5M#dIU@TlzP+Q)Xmj^vZ{x?TzEo3=IvzE)H$?=D+B%;E_TbzLGpVJa3*^A@gK{
zN!vot;~E+Qijcu%fH2YHMe02O!mmy)oElZZ$D6kda&ajeZKve7Nj}}3>1eDaYa;-1
zp=pFtEYb7u;CUw>ks5o4(#`5%s)BNVxg%|BEMK|Y$PS!sd!pn{93lP3hCKsoYXUMd
zvcdI<hVhqzO3KQD-b-KAPLJ3(wzgP=g&(=&m7E#sYiT`iA}@Y;bA9z9Gc&q1=)f&2
zg<hJ%x7mujD<k1LUJ|gbEMjo}=TEB2-Cw`hHhB@#RhHtl`ER9zy65L<?FUk)X4NZ9
zst!S)J-naa;-&0FhmViXm^mo$>;hIa-|o7jP!NVXTN6DsOwY_DgTvtvg0;HQWn9Ub
zfnLg=81*q%!`03XJt!zhMOD>yAeFvmog(4-7;KpOaAS}x=k@FN&SUR%Ch`GYUvfS=
z$#!;dcrsmSo`Dh;7gtZaFRO26=5k^-nkN~}q#U=MSCu~etI1~_TMo4+T>Rk!3lkF>
z1qH?7$q6||)@?_v^(B3(ukX#1^b@(ituWHY4#W^B5@^ZZZ!cIx&sz1%jV^X;I-WQ?
z$46n{xYZkTIP1O<!7D8-1&qchc#TtNgKtsq^5W^Az1cdm&kl*BDB~~256Gp4t*xv+
z0h)nU4S@y2zeOHzjoI%Y%CTquwfg^N{@uw1I`rc5(sr>Wz(O;alateBu|>30_pKX(
zs^enqj^>szA}b>Uetm`7<w;6OiEV9_4&3`01vG$#nHl~1`Wkeul9v}>HlOwLL^2Lw
zBk0_w)x8CZ(fU?aJdN@JJLD}v2dR;fP;XzK?M$^bm6%6PKgQz10$puwEtQ}hX7%Ha
zYQgFkEb41O)&)eXE|*_Qoh!Hbvp8~=@dZ5AdnYp<JjTbz2Qaj7h7*t9kR@o;R95nI
zjgIPq-MdeOb8~UUba!{N?}CrDsRW)x5|feH8?~ZgVB-QspD}L?K6XNjTv=OVmU(ue
zPmHPfZFH2vqS1r%WP4mWN5nPbcB!~<Mpjl<TquTKIxyjn_d*jBaE!!=nvWkz1NRp=
zA>y_5^}by;HZ~<tUrc9bXP`Y+54gBU_x}8e?TW^^bMM|gyS4`R8GI<Ftn5M2er;n@
zlLYwN-Q9{Wsj;!KFyzT^><H}f`D9^Gj9WAS<_T$OGZr^ql@z=d3A?*G?~N-=z()fB
zNn%pc!sBf(>-~jh3`@)TklmP=m;#{MP-L1M64$;zSrMQfe))^C-gBNpL5I|KxjoG1
z_XJz5b&XA%2;sSqsHiHCT@McrVg?3&n=keCDxgmR*n|-g5j^IfF;!Jn6A}~0zv;Ma
zbC<Lr&accYE!RiiO6#1Nt9X-biV**P@#+;0P|hNva^wdy3ybdQX$qi4uTCP3%Z(mz
za*{CoLn1~*Kh@SMqR#%<dVAOSEKX0GxSI~;<WQ-ot1I)pQZ6x6B*rACpm3X_6>`9B
z^jdrlm;iOYSB|gu)re7Rx8Q2v=jP_Fnt75~hV4v~aDt1A+nK@kP{0lGKqmA|+gp~5
zEK~eUJ>Rs(rfYGL{_N}wmw;djb*A9Cvv9}H?>J<4YEifwfiT*VBL(e16YuLe-$(#(
zQf&?V1F%m5<phPr6cZDZ5+9-waY>hWrzd}fSh+y^z1&tEhy=T){r-?C#MGxWs_Z@x
z57m6Ruod6|ejJJgt`TVBMrLMI<oH-7)mE<lmgUmcH0}WD97#X+R65B*pQ~a14#Y>)
z$?r!zW}l#*ID%-P34q8z_!-&x(0^QbH^haXH+*?fT~Uj&A#NLym{f4++!)Lxp`}fl
zm@teEn4FjZ(v-Y&b9uZ4f|r7WLvhpeyPO<cP^Uqn6AT=}Cu_ZlQVf;IGQB^D(`>~@
z0Q;!7Z{PMe#Kd5}trJ^XT6)0GKTvBwKuk@YxUu2jvDji<l-h1B1a^WiE-v2G+-&<j
zM=(dw9{c)YJuPIwWI3^fD@$wQY*FQa`PRjM&dn*68?9}Q<epBq0-@r2+@1{D2m0|W
zM<+)BEs2s}&BLQotzFU8mGf&`+v?ulT@Y&0(}^KbVY=YpV4BG*<kx4Hq#%oAh~<AA
z>F!1cWeD?BjIOBQ20ogelaug4FMsXi_vGQ(*|e0mJ-|=`XagagL?n^i1w_W78&gxm
zAAYflQ(Rj5{1h>m6W~l)ZPkn(s}%KT{)_!^HZPT^8@bcSo7jZ~t17|r4wUX&so(TL
znwpwzzf=x{Mtex83$9OX^z{pl#1yPK^xpOUc(2^o@wnL+3#6oun`>z<ZtfSkxk)Q4
zPx2&u(1H9wZrS%<YO&eb*(FP<)-{62r$mfd<V1}Cl4axFu4W$-8*2;NmP*`<F7l1a
z2*{=>bqv74Nr;IfYub_clOOabYrFyBfZYu&H2X1S4*saNmiFJBCV=Xlo;e6n$K9od
z+xEnvmEoD7qoeB^8WxI{0vClKIy$<O)YgImXt6cO`=<_B+pqufQv(A7?@N$JL{dLw
z4?0i*zFr8>O8T<0Yv)9IEw(VRuwY!F&IiCjwP1}WJ5v>1>miqa9i!(7sRST%b91R-
z1c(20z)C0D+f(-rH9QD-yPAm!g|DBVfr&}nQd?*bs1D$a9X$}Sw_S!w6ukAic}8O^
z<oE8mT6Kh+a_#NyF}@l$u&{W3cnC{okhj^bN}KZpj0;#&HZUN0o|F{O$ac${3~DKr
zk07rAqawcvKix4tQvBfL?tTXc2WMkrqafnu`ta}H?&tTo1)d&00jIYGrk+9A@5aTV
zp4yuxe|<5B^q#JyrlY6NE#|khw3LvPbj6YsdVQBG3m+u;r$=j8+S=N;0sL*4gM&lo
z__#q{Lm9WQFqv$~i9kqs{I+#h9yT)uqDv{v{1nc(0)oq0CA$8xz~pI?F<_`>Sdm&v
z_iJJ2m94G#!^1;tth+lt)P6#xZ-9?^Ew}UP&WmR)hof}tH&+qmk8p{Iy!|`m<m5DT
zbt%ZyhKGlJKxk%VV_ThTaBm7d=L7Mu)@g*Msu4tU4K1zizrTi0&+;=e>`o|_R1R)O
zChW3v!7^|8=ue*nE|AE=fZb{6`dpwwdNMsfKMj!3a{UK8$Uq|Q)0K)uS99wh4^p5o
zsldGiAo;iLL4foK1CCPb|J(4kq44nV%o^P8vFp8C*bb-UwTJ-%y?$}D4!JpDgEf7q
z9e)`e9X%>;t@}<UvC(sW4WxwW`J4QR>qJSvO_2}~)46X~<-hln1QN-<zw`I#sB3?*
zwJ+Wn3>I_su0>g}FRqj9+PPvndDrc}zwk?Sa^s5B)5M-W+bMYeUfQ(Ux|O2i8tEP_
z|M->9djD<kF>4DE1%?%q$)P7UXtDstvRm=_6ov|XnU&?rgN6r>+}rcmTWmGmeW?$s
z0Di#2$ESPXks7k=LP_~bEiH4~v+uTWpz^j(PELoX>Y(~oE&h1x{V6?D6{dZYELe)2
z;J8}9EnR>=6B`>A1Up!geRjSW1e!v>sI+$~F&%_B5Ryq))CzQR#hL<kO)`HmK%F2>
z2|AC`fi#5;rY-l+;q>(MJ|OyTY;G#CXEJee;%#nj3J42Fx3$S;^FOX`!1UP~rKgj5
z`f2H4dn-SpKaPO*jR!!EWfTOyCthBug7*C@AY-0R3kwR8EPqNLbkNY$jEarLs;sOO
z2tD%v^2yB0t0TiWG%-O6tR65;0azlfjNEH&Y+Bk}HOGJPadCE&r8)#&k6!_U__7?H
zq$hW&VqX(mI#KgjUP4-$MMj1WunHu-TiSoFt6N=PFRBX<TONzXAv(M`ve$kiQa(7K
zbs`3acGj+zfL&q=3X=mH{M*FpM}r`$`}^0IoRX3SC`4CR7fn}GR@OZpUS2`iN~hW%
zg(lB=F_7~_B{<N_W@}cD$K=(mtgNC@`k{X}@BqD%fugX0VFN51HNybi1L>nS0+Zx-
zKN!K`VE<3L;8-~Vw&+4aLjKb}K|up4wBoGivp;`9puixtbb+xBOw?X5c{dvyn-qMR
z$TumkO0{3Zv$##W!R*cue!=84ns>_u@sMXV!+lAVwRU~@z<qBfm6?z;!X(!OAN~+u
zsRQ|6>x{w(d7P%Lr-u_65|nC`l$xrhsv6txr0xb(K_c{w2Ob@L%D#VjdD%5POMQoe
y$K{7tx{6A_-G5)sINZYff4Ro-zg|(f!7*TDd*5Qv$_uU&L7J+%D%DC);Qs+Ln%}wr

literal 0
HcmV?d00001

diff --git a/lib/matplotlib/tests/test_mathtext.py b/lib/matplotlib/tests/test_mathtext.py
index 41619c18cf91..0a3354954280 100644
--- a/lib/matplotlib/tests/test_mathtext.py
+++ b/lib/matplotlib/tests/test_mathtext.py
@@ -135,6 +135,7 @@
     r'$1.$ $2.$ $19680801.$ $a.$ $b.$ $mpl.$',
     r'$\text{text}_{\text{sub}}^{\text{sup}} + \text{\$foo\$} + \frac{\text{num}}{\mathbf{\text{den}}}\text{with space, curly brackets \{\}, and dash -}$',
     r'$\boldsymbol{abcde} \boldsymbol{+} \boldsymbol{\Gamma + \Omega} \boldsymbol{01234} \boldsymbol{\alpha * \beta}$',
+    r'$\left\lbrace\frac{\left\lbrack A^b_c\right\rbrace}{\left\leftbrace D^e_f \right\rbrack}\right\rightbrace\ \left\leftparen\max_{x} \left\lgroup \frac{A}{B}\right\rgroup \right\rightparen$',
 ]
 
 digits = "0123456789"