Handle common line continuation in PS

This fixes error with line continuation character in the middle of the string interpolation.
rouge-ruby · Dec 12, 2022 · f285a44 · f285a44
1 parent 94696df
commit f285a44
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diff --git a/lib/rouge/lexers/powershell.rb b/lib/rouge/lexers/powershell.rb
@@ -240,6 +240,8 @@ class Powershell < RegexLexer
 
         rule %r/[-+*\/%=!.&|]/, Operator
         rule %r/[{}(),:;]/, Punctuation
+
+        rule %r/`$/, Str::Escape # line continuation
       end
     end
   end

diff --git a/spec/visual/samples/powershell b/spec/visual/samples/powershell
@@ -249,3 +249,10 @@ function NewVMSnapshot {
         [string[]]$Description = "`Snapshot taken via $(Split-Path $PSCommandPath -leaf) by $global:vsphereuser."
     )
 }
+
+# Handle line continuation in string interpolation
+Get-CimInstance -ComputerName localhost win32_logicaldisk `
+| where caption -eq "C:" `
+| foreach-object {write " $($_.caption) $('{0:N2}' `
+-f ($_.Size/1gb)) GB total, $('{0:N2}' `
+-f ($_.FreeSpace/1gb)) GB free "}
-Original file line number
+Diff line change
@@ Expand Up / @@ -240,6 +240,8 @@ class Powershell < RegexLexer @@
             rule %r/[-+*\/%=!.&|]/, Operator
             rule %r/[{}(),:;]/, Punctuation
+            rule %r/`$/, Str::Escape # line continuation
           end
         end
       end
@@ Expand Down @@