diff -r 4adee07a5e48 -r 67da045668cc src/Pure/Admin/other_isabelle.scala
--- a/src/Pure/Admin/other_isabelle.scala	Sun Jan 22 21:55:24 2023 +0100
+++ b/src/Pure/Admin/other_isabelle.scala	Sun Jan 22 21:58:04 2023 +0100
@@ -25,33 +25,39 @@
 
   override def toString: String = isabelle_home.toString
 
-  if (proper_string(System.getenv("ISABELLE_SETTINGS_PRESENT")).isDefined)
+  if (proper_string(System.getenv("ISABELLE_SETTINGS_PRESENT")).isDefined) {
     error("Cannot initialize with enclosing ISABELLE_SETTINGS_PRESENT")
+  }
 
 
   /* static system */
 
   def bash(
-      script: String,
-      redirect: Boolean = false,
-      echo: Boolean = false,
-      strict: Boolean = true): Process_Result =
+    script: String,
+    redirect: Boolean = false,
+    echo: Boolean = false,
+    strict: Boolean = true
+  ): Process_Result = {
     progress.bash(
       "export USER_HOME=" + File.bash_path(user_home) + "\n" +
       Isabelle_System.export_isabelle_identifier(isabelle_identifier) + script,
       env = null, cwd = isabelle_home.file, redirect = redirect, echo = echo, strict = strict)
+  }
 
   def apply(
-      cmdline: String,
-      redirect: Boolean = false,
-      echo: Boolean = false,
-      strict: Boolean = true): Process_Result =
+    cmdline: String,
+    redirect: Boolean = false,
+    echo: Boolean = false,
+    strict: Boolean = true
+  ): Process_Result = {
     bash("bin/isabelle " + cmdline, redirect = redirect, echo = echo, strict = strict)
+  }
 
-  def resolve_components(echo: Boolean): Unit =
+  def resolve_components(echo: Boolean): Unit = {
     other_isabelle(
       "env ISABELLE_TOOLS=" + Bash.string(Isabelle_System.getenv("ISABELLE_TOOLS")) +
       " isabelle components -a", redirect = true, echo = echo).check
+  }
 
   def getenv(name: String): String =
     other_isabelle("getenv -b " + Bash.string(name)).check.out
@@ -87,13 +93,15 @@
   def clean_settings(): Boolean =
     if (!etc_settings.is_file) true
     else if (File.read(etc_settings).startsWith("# generated by Isabelle")) {
-      etc_settings.file.delete; true
+      etc_settings.file.delete
+      true
     }
     else false
 
   def init_settings(settings: List[String]): Unit = {
-    if (!clean_settings())
+    if (!clean_settings()) {
       error("Cannot proceed with existing user settings file: " + etc_settings)
+    }
 
     Isabelle_System.make_directory(etc_settings.dir)
     File.write(etc_settings,