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#455 Fix bug with tricky unicode symbols (#1047)
authorAndrey <dyuuus@yandex.ru>
Sun, 13 Oct 2019 17:21:15 +0000 (20:21 +0300)
committerZsolt Dollenstein <zsol.zsol@gmail.com>
Sun, 13 Oct 2019 17:21:15 +0000 (10:21 -0700)
* add test for special unicode symbol which usual re can not process correctly
add regex lib which supports unicode 12.1.0 standard
replace re usage in project in favor to regex

* #455 fix dependency

Pipfile
Pipfile.lock
black.py
blib2to3/pgen2/conv.py
blib2to3/pgen2/literals.py
blib2to3/pgen2/tokenize.py
docs/conf.py
pyproject.toml
setup.py
tests/data/tricky_unicode_symbols.py [new file with mode: 0644]
tests/test_black.py

diff --git a/Pipfile b/Pipfile
index 623f6036a8f06bbc64c3180c02b8534d78fa9ccc..d82e2fedf6ad36a3fce102b8d9d362548d87259a 100644 (file)
--- a/Pipfile
+++ b/Pipfile
@@ -12,6 +12,7 @@ toml = ">=0.9.4"
 black = {path = ".",extras = ["d"],editable = true}
 aiohttp-cors = "*"
 typed-ast = ">=1.3.1"
 black = {path = ".",extras = ["d"],editable = true}
 aiohttp-cors = "*"
 typed-ast = ">=1.3.1"
+regex = "*"
 
 [dev-packages]
 pre-commit = "*"
 
 [dev-packages]
 pre-commit = "*"
index c5108b0328c07abc1232dc96b88f2cea0d2374b2..45899b88a04c510c2a83f97dadc535730fe81798 100644 (file)
@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
 {
     "_meta": {
         "hash": {
-            "sha256": "1e7537ef8102c7c4b5746b53247645a75fca24db7e0d94721fdcc8a62eb8a090"
+            "sha256": "5cceced346048c294218b3ecc9a550fd7667656d7115114cc5e7d3be18b40818"
         },
         "pipfile-spec": 6,
         "requires": {},
         },
         "pipfile-spec": 6,
         "requires": {},
     "default": {
         "aiohttp": {
             "hashes": [
     "default": {
         "aiohttp": {
             "hashes": [
-                "sha256:1ab7ab0a710135133dcc2980dd48fdd92f6f6066b66ef0356f458f395aa375af",
-                "sha256:1cf5b433a0aa3cf45b0acd4adb14cb20d99166aaa967ab89f629635ac263ca64",
-                "sha256:27b2bc8ca5555d5dadeee07cc2d6f8c06092c9d9c3f203c79c124d07474d3cf8",
-                "sha256:315f55a8469284f3ee54534d76f525b5c104dc514999dca4a007524a458aaba2",
-                "sha256:4f3c1572716ce2c8f22877a8185414ec213c057df35d27f7195f185691828608",
-                "sha256:635bef0626e28446372511e1fd31585205db2f18dab37a43d8adb30b0483e1bf",
-                "sha256:6907359de725e7ccd04b458a0f3322c7d1ba78df3df02e2ceb5abb0e21c975e6",
-                "sha256:772cfc0ff7c088d9e211377951a51c8a5173110cf56214f3e3d08a89be07badc",
-                "sha256:a91251585acf5203842551e37d2700c13c0bb411fa61b13485ab9e8d2dd400e9",
-                "sha256:acbbf0c47aa713d7a4baf52f11a356b01b82cabb53da452328546acaa21c6605",
-                "sha256:af7809ce7de6709afc7770403a70dfdbc4e988c91451108c8e123fac46b870d9",
-                "sha256:de611d7b95c1067d9a415979c63503dbdc735b943d08779506886614b410644a",
-                "sha256:e0fe698d1e6a852a27a88d2844a1a63839ee764d7cf214fd58cbea480407cc1d",
-                "sha256:fa155e309cc2277d6f9d099aecaf3ce78d86a31f5a62a994debc872e4c34ddf4"
+                "sha256:022c400e30848b1994236e31fb38db1dc4b551efe049f737cbac690ab2cdf5c4",
+                "sha256:10f9316ef068536dec0b9f09531fa1cb6bfa8394f278022cb96e789c77811ad2",
+                "sha256:2599b93fd5ba1120b3bd1366d67a7e26bd45b3d5d5548069e00b2fbef7f20ab0",
+                "sha256:2a1c71e7fb8c50e60fb4c9bab8bd5cf7c07f91a6b27dc2556d7354cd2ebb3689",
+                "sha256:6a19d34cc01414d94dd5a4466f8f397293fcb8929df8eeb8989119cc5ef928bb",
+                "sha256:7aab39c2a61a5c6b15bb7e561218ef64770ca1fbf4cc1878c96e630e2b7cc3cc",
+                "sha256:8959e28bc1b87542b0ee4a8302128f633bee296252f261bf03e118c4dff725f0",
+                "sha256:89820f7c488f4e9b1f74371da33403181e11e006663ddf074317aacd690838a6",
+                "sha256:ab761cf0f0b0b90887e276b4a7918f11e323f2228bbb30814bbd538c122028bf",
+                "sha256:cc648ecaca79e37c6e26f370e802e7ae640a069913f661f66c0421084bef219a",
+                "sha256:d6f26e80cd55ac88e1f0397fc8d547933225a5dc1add040e27788c2a028c64c6",
+                "sha256:e7d6ae4a36bfe6d7f93c6f42a0bfa1659f7d011006cb6e8207c85ef5acdb2986",
+                "sha256:fc55b1fec0e4cc1134ffb09ea3970783ee2906dc5dfd7cd16917913f2cfed65b"
             ],
             "index": "pypi",
             ],
             "index": "pypi",
-            "version": "==3.6.0"
+            "version": "==3.6.1"
         },
         "aiohttp-cors": {
             "hashes": [
         },
         "aiohttp-cors": {
             "hashes": [
         },
         "attrs": {
             "hashes": [
         },
         "attrs": {
             "hashes": [
-                "sha256:69c0dbf2ed392de1cb5ec704444b08a5ef81680a61cb899dc08127123af36a79",
-                "sha256:f0b870f674851ecbfbbbd364d6b5cbdff9dcedbc7f3f5e18a6891057f21fe399"
+                "sha256:ec20e7a4825331c1b5ebf261d111e16fa9612c1f7a5e1f884f12bd53a664dfd2",
+                "sha256:f913492e1663d3c36f502e5e9ba6cd13cf19d7fab50aa13239e420fef95e1396"
             ],
             "index": "pypi",
             ],
             "index": "pypi",
-            "version": "==19.1.0"
+            "version": "==19.2.0"
         },
         "black": {
             "editable": true,
         },
         "black": {
             "editable": true,
             ],
             "version": "==4.5.2"
         },
             ],
             "version": "==4.5.2"
         },
+        "regex": {
+            "hashes": [
+                "sha256:1e9f9bc44ca195baf0040b1938e6801d2f3409661c15fe57f8164c678cfc663f",
+                "sha256:587b62d48ca359d2d4f02d486f1f0aa9a20fbaf23a9d4198c4bed72ab2f6c849",
+                "sha256:835ccdcdc612821edf132c20aef3eaaecfb884c9454fdc480d5887562594ac61",
+                "sha256:93f6c9da57e704e128d90736430c5c59dd733327882b371b0cae8833106c2a21",
+                "sha256:a46f27d267665016acb3ec8c6046ec5eae8cf80befe85ba47f43c6f5ec636dcd",
+                "sha256:c5c8999b3a341b21ac2c6ec704cfcccbc50f1fedd61b6a8ee915ca7fd4b0a557",
+                "sha256:d4d1829cf97632673aa49f378b0a2c3925acd795148c5ace8ef854217abbee89",
+                "sha256:d96479257e8e4d1d7800adb26bf9c5ca5bab1648a1eddcac84d107b73dc68327",
+                "sha256:f20f4912daf443220436759858f96fefbfc6c6ba9e67835fd6e4e9b73582791a",
+                "sha256:f2b37b5b2c2a9d56d9e88efef200ec09c36c7f323f9d58d0b985a90923df386d",
+                "sha256:fe765b809a1f7ce642c2edeee351e7ebd84391640031ba4b60af8d91a9045890"
+            ],
+            "index": "pypi",
+            "version": "==2019.8.19"
+        },
         "toml": {
             "hashes": [
                 "sha256:229f81c57791a41d65e399fc06bf0848bab550a9dfd5ed66df18ce5f05e73d5c",
         "toml": {
             "hashes": [
                 "sha256:229f81c57791a41d65e399fc06bf0848bab550a9dfd5ed66df18ce5f05e73d5c",
         },
         "attrs": {
             "hashes": [
         },
         "attrs": {
             "hashes": [
-                "sha256:69c0dbf2ed392de1cb5ec704444b08a5ef81680a61cb899dc08127123af36a79",
-                "sha256:f0b870f674851ecbfbbbd364d6b5cbdff9dcedbc7f3f5e18a6891057f21fe399"
+                "sha256:ec20e7a4825331c1b5ebf261d111e16fa9612c1f7a5e1f884f12bd53a664dfd2",
+                "sha256:f913492e1663d3c36f502e5e9ba6cd13cf19d7fab50aa13239e420fef95e1396"
             ],
             "index": "pypi",
             ],
             "index": "pypi",
-            "version": "==19.1.0"
+            "version": "==19.2.0"
         },
         "babel": {
             "hashes": [
         },
         "babel": {
             "hashes": [
         },
         "commonmark": {
             "hashes": [
         },
         "commonmark": {
             "hashes": [
-                "sha256:14c3df31e8c9c463377e287b2a1eefaa6019ab97b22dad36e2f32be59d61d68d",
-                "sha256:867fc5db078ede373ab811e16b6789e9d033b15ccd7296f370ca52d1ee792ce0"
+                "sha256:452f9dc859be7f06631ddcb328b6919c67984aca654e5fefb3914d54691aed60",
+                "sha256:da2f38c92590f83de410ba1a3cbceafbc74fee9def35f9251ba9a971d6d66fd9"
             ],
             ],
-            "version": "==0.9.0"
+            "version": "==0.9.1"
         },
         "coverage": {
             "hashes": [
         },
         "coverage": {
             "hashes": [
             "index": "pypi",
             "version": "==17.8.0"
         },
             "index": "pypi",
             "version": "==17.8.0"
         },
-        "future": {
-            "hashes": [
-                "sha256:67045236dcfd6816dc439556d009594abf643e5eb48992e36beac09c2ca659b8"
-            ],
-            "version": "==0.17.1"
-        },
         "identify": {
             "hashes": [
                 "sha256:4f1fe9a59df4e80fcb0213086fcf502bc1765a01ea4fe8be48da3b65afd2a017",
         "identify": {
             "hashes": [
                 "sha256:4f1fe9a59df4e80fcb0213086fcf502bc1765a01ea4fe8be48da3b65afd2a017",
         },
         "jinja2": {
             "hashes": [
         },
         "jinja2": {
             "hashes": [
-                "sha256:065c4f02ebe7f7cf559e49ee5a95fb800a9e4528727aec6f24402a5374c65013",
-                "sha256:14dd6caf1527abb21f08f86c784eac40853ba93edb79552aa1e4b8aef1b61c7b"
+                "sha256:74320bb91f31270f9551d46522e33af46a80c3d619f4a4bf42b3164d30b5911f",
+                "sha256:9fe95f19286cfefaa917656583d020be14e7859c6b0252588391e47db34527de"
             ],
             ],
-            "version": "==2.10.1"
+            "version": "==2.10.3"
         },
         "markupsafe": {
             "hashes": [
         },
         "markupsafe": {
             "hashes": [
         },
         "mypy": {
             "hashes": [
         },
         "mypy": {
             "hashes": [
-                "sha256:0107bff4f46a289f0e4081d59b77cef1c48ea43da5a0dbf0005d54748b26df2a",
-                "sha256:07957f5471b3bb768c61f08690c96d8a09be0912185a27a68700f3ede99184e4",
-                "sha256:10af62f87b6921eac50271e667cc234162a194e742d8e02fc4ddc121e129a5b0",
-                "sha256:11fd60d2f69f0cefbe53ce551acf5b1cec1a89e7ce2d47b4e95a84eefb2899ae",
-                "sha256:15e43d3b1546813669bd1a6ec7e6a11d2888db938e0607f7b5eef6b976671339",
-                "sha256:352c24ba054a89bb9a35dd064ee95ab9b12903b56c72a8d3863d882e2632dc76",
-                "sha256:437020a39417e85e22ea8edcb709612903a9924209e10b3ec6d8c9f05b79f498",
-                "sha256:49925f9da7cee47eebf3420d7c0e00ec662ec6abb2780eb0a16260a7ba25f9c4",
-                "sha256:6724fcd5777aa6cebfa7e644c526888c9d639bd22edd26b2a8038c674a7c34bd",
-                "sha256:7a17613f7ea374ab64f39f03257f22b5755335b73251d0d253687a69029701ba",
-                "sha256:cdc1151ced496ca1496272da7fc356580e95f2682be1d32377c22ddebdf73c91"
+                "sha256:1d98fd818ad3128a5408148c9e4a5edce6ed6b58cc314283e631dd5d9216527b",
+                "sha256:22ee018e8fc212fe601aba65d3699689dd29a26410ef0d2cc1943de7bec7e3ac",
+                "sha256:3a24f80776edc706ec8d05329e854d5b9e464cd332e25cde10c8da2da0a0db6c",
+                "sha256:42a78944e80770f21609f504ca6c8173f7768043205b5ac51c9144e057dcf879",
+                "sha256:4b2b20106973548975f0c0b1112eceb4d77ed0cafe0a231a1318f3b3a22fc795",
+                "sha256:591a9625b4d285f3ba69f541c84c0ad9e7bffa7794da3fa0585ef13cf95cb021",
+                "sha256:5b4b70da3d8bae73b908a90bb2c387b977e59d484d22c604a2131f6f4397c1a3",
+                "sha256:84edda1ffeda0941b2ab38ecf49302326df79947fa33d98cdcfbf8ca9cf0bb23",
+                "sha256:b2b83d29babd61b876ae375786960a5374bba0e4aba3c293328ca6ca5dc448dd",
+                "sha256:cc4502f84c37223a1a5ab700649b5ab1b5e4d2bf2d426907161f20672a21930b",
+                "sha256:e29e24dd6e7f39f200a5bb55dcaa645d38a397dd5a6674f6042ef02df5795046"
             ],
             "index": "pypi",
             ],
             "index": "pypi",
-            "version": "==0.720"
+            "version": "==0.730"
         },
         "mypy-extensions": {
             "hashes": [
         },
         "mypy-extensions": {
             "hashes": [
-                "sha256:37e0e956f41369209a3d5f34580150bcacfabaa57b33a15c0b25f4b5725e0812",
-                "sha256:b16cabe759f55e3409a7d231ebd2841378fb0c27a5d1994719e340e4f429ac3e"
+                "sha256:a161e3b917053de87dbe469987e173e49fb454eca10ef28b48b384538cc11458"
             ],
             ],
-            "version": "==0.4.1"
+            "version": "==0.4.2"
         },
         "nodeenv": {
             "hashes": [
         },
         "nodeenv": {
             "hashes": [
         },
         "packaging": {
             "hashes": [
         },
         "packaging": {
             "hashes": [
-                "sha256:a7ac867b97fdc07ee80a8058fe4435ccd274ecc3b0ed61d852d7d53055528cf9",
-                "sha256:c491ca87294da7cc01902edbe30a5bc6c4c28172b5138ab4e4aa1b9d7bfaeafe"
+                "sha256:28b924174df7a2fa32c1953825ff29c61e2f5e082343165438812f00d3a7fc47",
+                "sha256:d9551545c6d761f3def1677baf08ab2a3ca17c56879e70fecba2fc4dde4ed108"
             ],
             ],
-            "version": "==19.1"
+            "version": "==19.2"
         },
         "pkginfo": {
             "hashes": [
         },
         "pkginfo": {
             "hashes": [
         },
         "pytz": {
             "hashes": [
         },
         "pytz": {
             "hashes": [
-                "sha256:26c0b32e437e54a18161324a2fca3c4b9846b74a8dccddd843113109e1116b32",
-                "sha256:c894d57500a4cd2d5c71114aaab77dbab5eabd9022308ce5ac9bb93a60a6f0c7"
+                "sha256:1c557d7d0e871de1f5ccd5833f60fb2550652da6be2693c1e02300743d21500d",
+                "sha256:b02c06db6cf09c12dd25137e563b31700d3b80fcc4ad23abb7a315f2789819be"
             ],
             ],
-            "version": "==2019.2"
+            "version": "==2019.3"
         },
         "pyyaml": {
             "hashes": [
         },
         "pyyaml": {
             "hashes": [
         },
         "snowballstemmer": {
             "hashes": [
         },
         "snowballstemmer": {
             "hashes": [
-                "sha256:713e53b79cbcf97bc5245a06080a33d54a77e7cce2f789c835a143bcdb5c033e"
+                "sha256:209f257d7533fdb3cb73bdbd24f436239ca3b2fa67d56f6ff88e86be08cc5ef0",
+                "sha256:df3bac3df4c2c01363f3dd2cfa78cce2840a79b9f1c2d2de9ce8d31683992f52"
             ],
             ],
-            "version": "==1.9.1"
+            "version": "==2.0.0"
         },
         "sphinx": {
             "hashes": [
         },
         "sphinx": {
             "hashes": [
         },
         "tqdm": {
             "hashes": [
         },
         "tqdm": {
             "hashes": [
-                "sha256:4c34f077399736e5dbf403183b5f0f1bda46e06433a3f93812386a9d56b28004",
-                "sha256:74d40d49cab95a93735323e450161f1e580dac42b25bf39770f6e3501d36ebfb"
+                "sha256:abc25d0ce2397d070ef07d8c7e706aede7920da163c64997585d42d3537ece3d",
+                "sha256:dd3fcca8488bb1d416aa7469d2f277902f26260c45aa86b667b074cd44b3b115"
             ],
             ],
-            "version": "==4.36.0"
+            "version": "==4.36.1"
         },
         "twine": {
             "hashes": [
         },
         "twine": {
             "hashes": [
-                "sha256:630fadd6e342e725930be6c696537e3f9ccc54331742b16245dab292a17d0460",
-                "sha256:a3d22aab467b4682a22de4a422632e79d07eebd07ff2a7079effb13f8a693787"
+                "sha256:5319dd3e02ac73fcddcd94f035b9631589ab5d23e1f4699d57365199d85261e1",
+                "sha256:9fe7091715c7576df166df8ef6654e61bada39571783f2fd415bdcba867c6993"
             ],
             "index": "pypi",
             ],
             "index": "pypi",
-            "version": "==1.15.0"
+            "version": "==2.0.0"
         },
         "typed-ast": {
             "hashes": [
         },
         "typed-ast": {
             "hashes": [
         },
         "urllib3": {
             "hashes": [
         },
         "urllib3": {
             "hashes": [
-                "sha256:b246607a25ac80bedac05c6f282e3cdaf3afb65420fd024ac94435cabe6e18d1",
-                "sha256:dbe59173209418ae49d485b87d1681aefa36252ee85884c31346debd19463232"
+                "sha256:3de946ffbed6e6746608990594d08faac602528ac7015ac28d33cee6a45b7398",
+                "sha256:9a107b99a5393caf59c7aa3c1249c16e6879447533d0887f4336dde834c7be86"
             ],
             ],
-            "version": "==1.25.3"
+            "version": "==1.25.6"
         },
         "virtualenv": {
             "hashes": [
         },
         "virtualenv": {
             "hashes": [
index b8736e7b1d9360085674307b71318ef427d873ab..ff373c863d45b71849cb0ae0b1eb800af54c10a7 100644 (file)
--- a/black.py
+++ b/black.py
@@ -12,7 +12,7 @@ from multiprocessing import Manager, freeze_support
 import os
 from pathlib import Path
 import pickle
 import os
 from pathlib import Path
 import pickle
-import re
+import regex as re
 import signal
 import sys
 import tempfile
 import signal
 import sys
 import tempfile
@@ -3810,7 +3810,8 @@ def re_compile_maybe_verbose(regex: str) -> Pattern[str]:
     """
     if "\n" in regex:
         regex = "(?x)" + regex
     """
     if "\n" in regex:
         regex = "(?x)" + regex
-    return re.compile(regex)
+    compiled: Pattern[str] = re.compile(regex)
+    return compiled
 
 
 def enumerate_reversed(sequence: Sequence[T]) -> Iterator[Tuple[Index, T]]:
 
 
 def enumerate_reversed(sequence: Sequence[T]) -> Iterator[Tuple[Index, T]]:
index ed0cac532e424952b460788a1d6f54d279627af6..dd70752722fc43050b570f527df69d3fa653960c 100644 (file)
@@ -27,7 +27,7 @@ without having to invoke the Python pgen C program.
 """
 
 # Python imports
 """
 
 # Python imports
-import re
+import regex as re
 
 # Local imports
 from pgen2 import grammar, token
 
 # Local imports
 from pgen2 import grammar, token
index b9b63e6e5572c1bc35526c6126db2b31b798d270..baa17e12a9c42b37d421638da2a59b2bf050f075 100644 (file)
@@ -3,7 +3,7 @@
 
 """Safely evaluate Python string literals without using eval()."""
 
 
 """Safely evaluate Python string literals without using eval()."""
 
-import re
+import regex as re
 
 simple_escapes = {"a": "\a",
                   "b": "\b",
 
 simple_escapes = {"a": "\a",
                   "b": "\b",
index a5c6462e7cfaeeaf47f5b685c723d1f079d5bbc2..977548912c00f584ef135036d7185b67f289f47d 100644 (file)
@@ -29,7 +29,7 @@ __author__ = 'Ka-Ping Yee <ping@lfw.org>'
 __credits__ = \
     'GvR, ESR, Tim Peters, Thomas Wouters, Fred Drake, Skip Montanaro'
 
 __credits__ = \
     'GvR, ESR, Tim Peters, Thomas Wouters, Fred Drake, Skip Montanaro'
 
-import re
+import regex as re
 from codecs import BOM_UTF8, lookup
 from blib2to3.pgen2.token import *
 
 from codecs import BOM_UTF8, lookup
 from blib2to3.pgen2.token import *
 
index 37a6f84864bea6076c14b762c5e93bc572585bbe..ce7536defbd6417be7c62c8fcbbba3c899bc41b0 100644 (file)
@@ -13,7 +13,7 @@
 # documentation root, use os.path.abspath to make it absolute, like shown here.
 #
 from pathlib import Path
 # documentation root, use os.path.abspath to make it absolute, like shown here.
 #
 from pathlib import Path
-import re
+import regex as re
 import shutil
 import string
 
 import shutil
 import string
 
index 071a80efecc6ce674481be357ae23d1218912cc4..17476bba6d849f759927db1163438000c16fe154 100644 (file)
@@ -75,6 +75,7 @@ click = "^6.5"
 toml = "^0.9.4"
 appdirs = "^1.4"
 aiohttp = { version = "^3.4", optional = true }
 toml = "^0.9.4"
 appdirs = "^1.4"
 aiohttp = { version = "^3.4", optional = true }
+regex = "^2019.8"
 
 [tool.poetry.extras]
 d = ["aiohttp"]
 
 [tool.poetry.extras]
 d = ["aiohttp"]
index d4e940584ed8c60e94b8956ecc2da611f217128a..1ba7a007857c56b3f1c751cc45a630c3adb13cc4 100644 (file)
--- a/setup.py
+++ b/setup.py
@@ -39,6 +39,7 @@ setup(
         "appdirs",
         "toml>=0.9.4",
         "typed-ast>=1.3.1",
         "appdirs",
         "toml>=0.9.4",
         "typed-ast>=1.3.1",
+        "regex",
     ],
     extras_require={"d": ["aiohttp>=3.3.2", "aiohttp-cors"]},
     test_suite="tests.test_black",
     ],
     extras_require={"d": ["aiohttp>=3.3.2", "aiohttp-cors"]},
     test_suite="tests.test_black",
diff --git a/tests/data/tricky_unicode_symbols.py b/tests/data/tricky_unicode_symbols.py
new file mode 100644 (file)
index 0000000..366a92f
--- /dev/null
@@ -0,0 +1,6 @@
+ä = 1
+µ = 2
+蟒 = 3
+x󠄀 = 4
+មុ = 1
+Q̇_per_meter = 4
index 66a0761ecf82a2d3c529fa0fff499bf932c2412f..92d77ac0705c20263f5e7f55c860b26b5677e19a 100644 (file)
@@ -7,7 +7,7 @@ from functools import partial
 from io import BytesIO, TextIOWrapper
 import os
 from pathlib import Path
 from io import BytesIO, TextIOWrapper
 import os
 from pathlib import Path
-import re
+import regex as re
 import sys
 from tempfile import TemporaryDirectory
 from typing import Any, BinaryIO, Generator, List, Tuple, Iterator, TypeVar
 import sys
 from tempfile import TemporaryDirectory
 from typing import Any, BinaryIO, Generator, List, Tuple, Iterator, TypeVar
@@ -1245,6 +1245,13 @@ class BlackTestCase(unittest.TestCase):
             two = black.read_cache(short_mode)
             self.assertNotIn(path, two)
 
             two = black.read_cache(short_mode)
             self.assertNotIn(path, two)
 
+    def test_tricky_unicode_symbols(self) -> None:
+        source, expected = read_data("tricky_unicode_symbols")
+        actual = fs(source)
+        self.assertFormatEqual(expected, actual)
+        black.assert_equivalent(source, actual)
+        black.assert_stable(source, actual, black.FileMode())
+
     def test_single_file_force_pyi(self) -> None:
         reg_mode = black.FileMode()
         pyi_mode = black.FileMode(is_pyi=True)
     def test_single_file_force_pyi(self) -> None:
         reg_mode = black.FileMode()
         pyi_mode = black.FileMode(is_pyi=True)