Extra "didn't" in arc description for exiting the module

[zackw]

Describe the bug

When this simple Python script is analyzed for branch coverage...

#! /usr/bin/python3

print("Executed unconditionally")

if __name__ == "__main__":
    print("Executed if __name__ == __main__")

... both the HTML and LCOV reporters describe the non-executed branch that skips over print("Executed if __name__ == __main__") with an extra "didn't."

top-level-if-1.lcov

SF:top-level-if-1.py
DA:3,1
DA:5,1
DA:6,1
LF:3
LH:3
BRDA:5,0,jump to line 6,1
BRDA:5,0,didn't exit the module,0
BRF:2
BRH:1
end_of_record

top-level-if-1_py.html excerpt

<main id="source">
    <p class="pln"><span class="n"><a id="t1" href="#t1">1</a></span><span class="t"><span class="com"># </span>&nbsp;</span><span class="r"></span></p>
    <p class="pln"><span class="n"><a id="t2" href="#t2">2</a></span><span class="t">&nbsp;</span><span class="r"></span></p>
    <p class="run"><span class="n"><a id="t3" href="#t3">3</a></span><span class="t"><span class="nam">print</span><span class="op">(</span><span class="str">"Executed unconditionally"</span><span class="op">)</span>&nbsp;</span><span class="r"></span></p>
    <p class="pln"><span class="n"><a id="t4" href="#t4">4</a></span><span class="t">&nbsp;</span><span class="r"></span></p>
    <p class="par run show_par"><span class="n"><a id="t5" href="#t5">5</a></span><span class="t"><span class="key">if</span> <span class="nam">__name__</span> <span class="op">==</span> <span class="str">"__main__"</span><span class="op">:</span>&nbsp;</span><span class="r"><span class="annotate short">5&#x202F;&#x219B;&#x202F;exit</span><span class="annotate long">line 5 didn't didn't exit the module because the condition on line 5 was always true</span></span></p>
    <p class="run"><span class="n"><a id="t6" href="#t6">6</a></span><span class="t">    <span class="nam">print</span><span class="op">(</span><span class="str">"Executed if __name__ == __main__"</span><span class="op">)</span>&nbsp;</span><span class="r"></span></p>
</main>

The problem is with the second BRDA: line in the lcov output:

BRDA:5,0,didn't exit the module,0

and with the long annotation for line 5 in the html output:

<span class="annotate long">line 5 didn't didn't exit the module because the condition on line 5 was always true</span>

Strikethrough indicates text that should be removed.

$ coverage --version
Coverage.py, version 7.6.2 with C extension
$ python3 --version
Python 3.12.6

I imagine this is fallout from the refactoring done to address #1850.

To Reproduce

1. Copy the script at the beginning of this report to top-level-if-1.py.
2. coverage run --branch top-level-if-1.py.
3. coverage lcov -o top-level-if-1.lcov should produce an identical file to top-level-if-1.lcov embedded above.
4. coverage html should produce (among other things) top-level-if-1_py.html matching the excerpt embedded above.

[nedbat]

Fixed in commit 474a363

[nedbat]

This is now released as part of coverage 7.6.3.