Rename new_handler as new_dcx.

Author: nnethercote

src/librustdoc/config.rs

@@ -19,7 +19,7 @@ use rustc_session::EarlyDiagCtxt;
 use rustc_span::edition::Edition;
 use rustc_target::spec::TargetTriple;
 
-use crate::core::new_handler;
+use crate::core::new_dcx;
 use crate::externalfiles::ExternalHtml;
 use crate::html;
 use crate::html::markdown::IdMap;
@@ -348,7 +348,7 @@ impl Options {
         let codegen_options = CodegenOptions::build(handler, matches);
         let unstable_opts = UnstableOptions::build(handler, matches);
 
-        let diag = new_handler(error_format, None, diagnostic_width, &unstable_opts);
+        let diag = new_dcx(error_format, None, diagnostic_width, &unstable_opts);
 
         // check for deprecated options
         check_deprecated_options(matches, &diag);

src/librustdoc/core.rs

@@ -123,8 +123,8 @@ impl<'tcx> DocContext<'tcx> {
 /// Creates a new `DiagCtxt` that can be used to emit warnings and errors.
 ///
 /// If the given `error_format` is `ErrorOutputType::Json` and no `SourceMap` is given, a new one
-/// will be created for the handler.
-pub(crate) fn new_handler(
+/// will be created for the `DiagCtxt`.
+pub(crate) fn new_dcx(
     error_format: ErrorOutputType,
     source_map: Option<Lrc<source_map::SourceMap>>,
     diagnostic_width: Option<usize>,

src/librustdoc/lib.rs

@@ -745,12 +745,8 @@ fn main_args(
         }
     };
 
-    let diag = core::new_handler(
-        options.error_format,
-        None,
-        options.diagnostic_width,
-        &options.unstable_opts,
-    );
+    let diag =
+        core::new_dcx(options.error_format, None, options.diagnostic_width, &options.unstable_opts);
 
     match (options.should_test, options.markdown_input()) {
         (true, true) => return wrap_return(&diag, markdown::test(options)),