Revert "lib/options: Use escapeNixIdentifier for showOption"

This is used in in the manual generation for option identifiers that can
be linked. This, unike what the example describes, doesn't preserve
quotes which is needed for these identifiers to be valid.

This reverts commit 124cccbe3b63122733e02e41e45a383ec48752fd.

1 files changed, 8 insertions, 7 deletions

diff --git a/lib/options.nix b/lib/options.nix
index 7407905131b5..d5006365e54c 100644
--- a/lib/options.nix
+++ b/lib/options.nix
@@ -200,13 +200,14 @@ rec {
      Unlike attributes, options can also start with numbers:
        (showOption ["windowManager" "2bwm" "enable"]) == "windowManager.2bwm.enable"
   */
-  showOption = parts:
-    let
-      escapeOptionPart = part:
-        if part == "*" || builtins.match "<.+>" part != null || builtins.match "[a-zA-Z0-9_][a-zA-Z0-9_'-]+" part != null
-        then part
-        else escapeNixIdentifier part;
-    in concatMapStringsSep "." escapeOptionPart parts;
+  showOption = parts: let
+    escapeOptionPart = part:
+      let
+        escaped = lib.strings.escapeNixString part;
+      in if escaped == "\"${part}\""
+         then part
+         else escaped;
+    in (concatStringsSep ".") (map escapeOptionPart parts);
   showFiles = files: concatStringsSep " and " (map (f: "`${f}'") files);
   unknownModule = "<unknown-file>";