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give xargs batch file execution additional headroom

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Anthony Sottile
2021-04-04 10:00:49 -07:00
parent e431b2b898
commit fb590d41ff
1 changed files with 3 additions and 1 deletions
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pre_commit/xargs.py
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@@ -145,7 +145,9 @@ def xargs(
# this is implementation details but the command gets translated into
# full/path/to/cmd.exe /c *cmd
cmd_exe = parse_shebang.find_executable('cmd.exe')
_max_length = 8192 - len(cmd_exe) - len(' /c ')
# 1024 is additionally subtracted to give headroom for further
# expansion inside the batch file
_max_length = 8192 - len(cmd_exe) - len(' /c ') - 1024
partitions = partition(cmd, varargs, target_concurrency, _max_length)