util: implement `writelines()` on atomictempfile With typehints on the vfs objects, pytype will flag this: FAILED: /mnt/c/Users/Matt/hg/.pytype/pyi/mercurial/patch.pyi /usr/bin/python3.8 -m pytype.single --imports_info /mnt/c/Users/Matt/hg/.pytype/imports/mercurial.patch.imports --module-name mercurial.patch -V 3.7 -o /mnt/c/Users/Matt/hg/.pytype/pyi/mercurial/patch.pyi --analyze-annotated --nofail --quick /mnt/c/Users/Matt/hg/mercurial/patch.py File "/mnt/c/Users/Matt/hg/mercurial/patch.py", line 535, in writerej: No attribute 'writelines' on mercurial.util.atomictempfile [attribute-error] In Union[ mercurial.util.atomictempfile, mercurial.vfs.checkambigatclosing, mercurial.vfs.delayclosedfile, mercurial.windows.fdproxy, mercurial.windows.mixedfilemodewrapper ] It's not a real problem there (atomictempfile is only created by passing different args), but it's reasonable for this to implement the function and behave like a normal file. There are other functions missing that can be added if/when needed.

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/*

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 * Copyright (c) 2016-present, Yann Collet, Facebook, Inc.

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 * All rights reserved.

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 *

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 * This source code is licensed under both the BSD-style license (found in the

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 * LICENSE file in the root directory of this source tree) and the GPLv2 (found

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 * in the COPYING file in the root directory of this source tree).

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 * You may select, at your option, one of the above-listed licenses.

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 */

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/*-*************************************

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*  Dependencies

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***************************************/

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#include "error_private.h"

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#include "zbuff.h"

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/*-****************************************

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*  ZBUFF Error Management  (deprecated)

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******************************************/

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/*! ZBUFF_isError() :

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*   tells if a return value is an error code */

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unsigned ZBUFF_isError(size_t errorCode) { return ERR_isError(errorCode); }

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/*! ZBUFF_getErrorName() :

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*   provides error code string from function result (useful for debugging) */

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const char* ZBUFF_getErrorName(size_t errorCode) { return ERR_getErrorName(errorCode); }