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nitely · Jan 4, 2024 · 9cd232f · 9cd232f
1 parent 572491e
commit 9cd232f
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Showing 2 changed files with 19 additions and 1 deletion.
diff --git a/src/regex/exptransformation.nim b/src/regex/exptransformation.nim
@@ -322,7 +322,8 @@ func expandArbitrayBytes(exp: Exp, flags: RegexFlags): Exp =
       var node2 = node
       node2.cp = Rune((node.cp.uint32 and (0xff'u32 shl (i * 8))) shr (i * 8))
       result.s.add node2
-  result.s = newSeqOfCap[Node](exp.s.len)
+  result.s = newSeq[Node](exp.s.len)
+  result.s.setLen 0
   for node in exp.s:
     if node.kind notin {reChar, reCharCi}:
       result.s.add node

diff --git a/tests/tests2.nim b/tests/tests2.nim
@@ -3119,3 +3119,20 @@ when not defined(js) or NimMajor >= 2:
     check replace("\xF0\xAF\xA2\x94\x94", re2(r"弢{2}", flags), "abc") == "abc"
     check replace("\xF0\xAF\xA2\x94\x94", re2(r"弢+", flags), "abc") == "abc"
     check replace("\x02\xF8\x95\x02\xF8\x95", re2(r"\x{2F895}{2}", flags), "abc") == "abc"
+    check match("\xF0\xAF\xA2\x94", re2(r".{4}", flags))
+    check match("\x02\xF8\x95", re2(r".+(?<=\x{2F895})", flags))
+    check(not match("\x02\xF8\x95\x95", re2(r".+(?<=\x{2F895})", flags)))
+    check match("\x02\xF8\x95\x02\xF8\x95", re2(r".+(?<=\x{2F895}+)", flags))
+    check match("\x02\xF8\x95\x02\xF8\x95", re2(r".+(?<=\x{2F895}{2})", flags))
+    check match("弢", re2(r".+(?<=弢)", flags))
+    check match("\xF0\xAF\xA2\x94", re2(r".+(?<=弢)", flags))
+    check match("弢", re2(r".+(?<=\xF0\xAF\xA2\x94)", flags))
+    check match("\xF0\xAF\xA2\x94", re2(r".+(?<=弢)", flags))
+    check match("\xF0\xAF\xA2\x94", re2(r".{4}(?<=弢)", flags))
+    check match("\xF0\xAF\xA2\x94", re2(r".{4}(?<=.{4})", flags))
+    block:
+      var m: RegexMatch2
+      check match("a", re2(r"a", flags)) and
+        m.groupsCount == 0
+      check match("\x02\xF8\x95", re2(r"\x{2F895}", flags)) and 
+        m.groupsCount == 0