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fix hg: parse error at 0: not a prefix: (use --rev instead -r=) #12373

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merged 2 commits into from
Oct 27, 2023
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fix hg: parse error at 0: not a prefix: (use --rev instead -r=) #12373

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1e56f60
fix mercurial revision parse error: use two hypen argument --rev= ins…
Oct 25, 2023
e7f14e7
Update news/370392cf-52cd-402c-b402-06d2ff398f89.bugfix.rst
efflamlemaillet Oct 26, 2023
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1 change: 1 addition & 0 deletions news/370392cf-52cd-402c-b402-06d2ff398f89.bugfix.rst
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Original file line number Diff line number Diff line change
@@ -0,0 +1 @@
Fix mercurial revision "parse error": use ``--rev={ref}`` instead of ``-r={ref}``
2 changes: 1 addition & 1 deletion src/pip/_internal/vcs/mercurial.py
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Expand Up @@ -31,7 +31,7 @@ class Mercurial(VersionControl):

@staticmethod
def get_base_rev_args(rev: str) -> List[str]:
return [f"-r={rev}"]
return [f"--rev={rev}"]

def fetch_new(
self, dest: str, url: HiddenText, rev_options: RevOptions, verbosity: int
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2 changes: 1 addition & 1 deletion tests/unit/test_vcs.py
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Expand Up @@ -66,7 +66,7 @@ def test_rev_options_repr() -> None:
# First check VCS-specific RevOptions behavior.
(Bazaar, [], ["-r", "123"], {}),
(Git, ["HEAD"], ["123"], {}),
(Mercurial, [], ["-r=123"], {}),
(Mercurial, [], ["--rev=123"], {}),
(Subversion, [], ["-r", "123"], {}),
# Test extra_args. For this, test using a single VersionControl class.
(
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