Since git diff -h returns a git like help outside of repositories, ru…

…n git in the system's temp dir and remove the special case "diff mode"

src/GitHintTabExpansion.ps1

@@ -32,7 +32,7 @@ function Get-GITModeHint {
 		}
 		$script:paramHints.$Command.add("*", $modeTable)
 	}
-	
+
 	# Create the results
 	if ($script:paramHints.$Command."*".containsKey($Mode))
 	{
@@ -62,28 +62,19 @@ function Get-GITParameterHint {
 	if (-not $script:paramHints.containsKey($Command)) { $script:paramHints.add($Command, @{}) }
 	# Populate the "mode branch" if empty
 	if (-not $script:paramHints.$Command.containsKey($Mode)) {
-		$helpStrings = Invoke-Utf8ConsoleCommand { & $Command $Mode -h 2>&1 }
-		$exceptions = @("diff")
+		$helpStrings = Invoke-Utf8ConsoleCommand { & $Command -C "$($env:temp)" --no-pager $Mode -h 2>&1 }
 		$preProcessedStrings = @()
 		# Preprocessing
 		foreach ($line in $helpStrings)
 		{
 			switch -RegEx ($line) {
-				"^\s{2,2}(-.*)$" {
-					# this a line defining a parameter, if we are in git diff
-					if ($Mode -like "diff") { $preProcessedStrings += "$($Matches[1])" }
-				}
-				"^\s{15,15}(\s.*)$" {
-					# this line belongs to the parameter description of the line before in git diff
-					if ($Mode -like "diff") { $preProcessedStrings[-1] = "$($preProcessedStrings[-1])$($Matches[1])" }
-				}				
 				"^\s{4,4}(-.*)$" {
 					# this is a line defining a parameter
-					if ($Mode -notin $exceptions) { $preProcessedStrings += "$($Matches[1])" }
+					$preProcessedStrings += "$($Matches[1])"
 				}
 				"^\s{25,25}(\s.*)$" {
 					# this line belongs to the parameter description of the line before
-					if ($Mode -notin $exceptions) { $preProcessedStrings[-1] = "$($preProcessedStrings[-1])$($Matches[1])" }
+					$preProcessedStrings[-1] = "$($preProcessedStrings[-1])$($Matches[1])"
 				}
 			}
 		}
@@ -171,7 +162,7 @@ function Add-HintsToParams {
 
 	# We are only handling git at the moment
 	if ($Command -notmatch "^$(Get-AliasPattern git) (.*)") { return $PossibleParams }
-	
+
 	# Determing git mode, which is the first parameter without dashes, but not the last one, which is "" or an incomplete parameter
 	$cmdMode = $null
 	for ($i=1; $i -lt $cmdParts.length-1; $i++) {
@@ -180,7 +171,7 @@ function Add-HintsToParams {
 			break
 		}
 	}
-		
+
 	$newTabCompletions = @()
 	if ($cmdMode) {
 		# we're searching a parameter for mode $cmdMode