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Reset the number of registers after string pattern match #221

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Merged
kou merged 1 commit into from
Oct 6, 2026
+22 −1
Merged

Reset the number of registers after string pattern match #221

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2 changes: 1 addition & 1 deletion ext/strscan/strscan.c
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Original file line number Diff line number Diff line change
Expand Up @@ -634,7 +634,7 @@ set_registers(struct strscanner *p, size_t pos, size_t length)
const int at = 0;
OnigRegion *regs = &(p->regs);
onig_region_clear(regs);
if (onig_region_set(regs, at, 0, 0)) return;
if (onig_region_resize(regs, at + 1) != 0) return;
if (p->fixed_anchor_p) {
regs->beg[at] = pos + p->curr;
regs->end[at] = pos + p->curr + length;
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21 changes: 21 additions & 0 deletions test/strscan/test_stringscanner.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -1025,6 +1025,27 @@ def test_size
assert_equal(4, s.size)
end

def test_size_after_string_match
s = create_string_scanner("abc")
s.scan(/(a)(b)/)
s.scan("c")
assert_equal([1, []], [s.size, s.captures])
end

def test_size_after_getch
s = create_string_scanner("abc")
s.scan(/(a)(b)/)
s.getch
assert_equal([1, []], [s.size, s.captures])
end

def test_size_after_get_byte
s = create_string_scanner("abc")
s.scan(/(a)(b)/)
s.get_byte
assert_equal([1, []], [s.size, s.captures])
end

def test_captures
s = create_string_scanner("Timestamp: Fri Dec 12 1975 14:39")
s.scan("Timestamp: ")
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