Function extractBaseCommand

src/tools/PowerShellTool/commandSemantics.ts:100–111

* Extract the command name from a single pipeline segment. * Strips leading `&` / `.` call operators and `.exe` suffix, lowercases.

(segment: string)

 * Strips leading `&` / `.` call operators and `.exe` suffix, lowercases.
 */
function extractBaseCommand(segment: string): string {
  // Strip PowerShell call operators: & "cmd", . "cmd"
  // (& and . at segment start followed by whitespace invoke the next token)
  const stripped = segment.trim().replace(/^[&.]\s+/, '')
  const firstToken = stripped.split(/\s+/)[0] || ''
  // Strip surrounding quotes if command was invoked as & "grep.exe"
  const unquoted = firstToken.replace(/^["']|["']$/g, '')
  // Strip path: C:\bin\grep.exe → grep.exe, .\rg.exe → rg.exe
  const basename = unquoted.split(/[\\/]/).pop() || unquoted
  // Strip .exe suffix (Windows is case-insensitive)
  return basename.toLowerCase().replace(/\.exe$/, '')
}

/**
 * Extract the primary command from a PowerShell command line.