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Update PowerShell alias to handle no history

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If history is cleared (or the shell is new and there is no history),
invoking thefuck results in an error because the alias attempts to execute
the usage string.

The fix is to check if Get-History returns anything before invoking
thefuck.
This commit is contained in:
Matt Kotsenas 2017-03-01 09:32:55 -08:00 committed by Matt Kotsenas
parent e893521872
commit 4669a033ee
1 changed files with 8 additions and 5 deletions
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7
thefuck/shells/powershell.py
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@ -3,12 +3,15 @@ from .generic import Generic
class Powershell(Generic):
def app_alias(self, fuck):
return 'function ' + fuck + ' { \n' \
' $fuck = $(thefuck (Get-History -Count 1).CommandLine);\n' \
return 'function ' + fuck + ' {\n' \
' $history = (Get-History -Count 1).CommandLine;\n' \
' if (-not [string]::IsNullOrWhiteSpace($history)) {\n' \
' $fuck = $(thefuck $history);\n' \
' if (-not [string]::IsNullOrWhiteSpace($fuck)) {\n' \
' if ($fuck.StartsWith("echo")) { $fuck = $fuck.Substring(5); }\n' \
' else { iex "$fuck"; }\n' \
' }\n' \
' }\n' \
'}\n'
def and_(self, *commands):