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When expanding vars allow using $$ for literal $

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Kovid Goyal 2021-08-31 17:24:19 +05:30
parent 5ff66f6bfa
commit aafd8a8da4
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1 changed files with 4 additions and 1 deletions
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5
kitty/utils.py
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@ -34,6 +34,9 @@ else:
def expandvars(val: str, env: Mapping[str, str] = {}, fallback_to_os_env: bool = True) -> str:
'''
Expand $VAR and ${VAR} Use $$ for a literal $
'''
def sub(m: Match) -> str:
key = m.group(1) or m.group(2)
@ -47,7 +50,7 @@ def expandvars(val: str, env: Mapping[str, str] = {}, fallback_to_os_env: bool =
if '$' not in val:
return val
return re.sub(r'\$(?:(\w+)|\{([^}]+)\})', sub, val)
return re.sub(r'\$(?:(\w+)|\{([^}]+)\})', sub, val.replace('$$', '\0')).replace('\0', '$')
def platform_window_id(os_window_id: int) -> Optional[int]: