diff --git a/scribble-doc/scribblings/scribble/acmart.scrbl b/scribble-doc/scribblings/scribble/acmart.scrbl
index 657af313..f985e01c 100644
--- a/scribble-doc/scribblings/scribble/acmart.scrbl
+++ b/scribble-doc/scribblings/scribble/acmart.scrbl
@@ -161,13 +161,22 @@ Specifies a subtitle.}
                         #f)
                   #f]
                  [#:email email
-                  (or/c pre-content? (listof pre-content?) #f)
-                  #f]
+                  (or/c pre-content? email? (listof email?))
+                  '()]
                  [name pre-content?] ...)
          block?]{
 
  Specifies an author with an optional email address, affiliation, and/or orcid.
  
+@codeblock|{
+  #lang scribble/acmart
+  @title{Title}
+  @author["Unboxed Value"
+          #:email (list (email "user@server.com")
+                        (email-string "case--Int#@GHC.Prim.info"))]}
+
+  @abstract{abstracting abstract title}
+}|
 }
 
 @deftogether[(
@@ -197,9 +206,18 @@ screen version of the image links to the badge authority.
 
 }
 
-@defproc[(email [text pre-content?] ...)
-         email?]{
+@deftogether[(
+@defproc[(email [text pre-content?] ...) email?]
+@defproc[(email-string [text string?] ...) email?]
+)]{
  Creates an @racket[email?] object for use with @racket[author].
+
+ @racket[email-string] is like @racket[email]
+ except that @racket[email-string] only takes
+ @tech[#:doc '(lib "scribblings/reference/reference.scrbl") #:key "string"]{strings},
+ escapes all @tt{%} and @tt{#} characters
+ in the arguments and typesets the email address with the
+ @racket['exact-chars] style.
 }
 
 @defproc[(email? [email any/c]) boolean?]{
diff --git a/scribble-doc/scribblings/scribble/base.scrbl b/scribble-doc/scribblings/scribble/base.scrbl
index c9832c49..cecb9163 100644
--- a/scribble-doc/scribblings/scribble/base.scrbl
+++ b/scribble-doc/scribblings/scribble/base.scrbl
@@ -737,7 +737,7 @@ which is normally defined using @racket[elemtag].}
 Creates an index element given a plain-text string---or list of
 strings for a hierarchy, such as @racket['("strings" "plain")] for a
 ``plain'' entry below a more general ``strings'' entry. As index keys,
-the strings are ``cleaned'' using @racket[clean-up-index-strings]. The
+the strings are ``cleaned'' using @racket[clean-up-index-string]. The
 strings (without clean-up) also serve as the text to render in the
 index. The @tech{decode}d @racket[pre-content] is the text to appear
 inline as the index target.
diff --git a/scribble-doc/scribblings/scribble/how-to-paper.scrbl b/scribble-doc/scribblings/scribble/how-to-paper.scrbl
index a15d190b..e6d6bfcc 100644
--- a/scribble-doc/scribblings/scribble/how-to-paper.scrbl
+++ b/scribble-doc/scribblings/scribble/how-to-paper.scrbl
@@ -399,7 +399,7 @@ What if you want to provide arguments in text mode, but you also want
 to supply other optional arguments? You can use both
 @litchar{[}...@litchar{]} and @litchar["{"]...@litchar["}"] for an
 operation, as long as the @litchar{[}...@litchar{]} is first, and as
-long as no character separate the closing @litchar{]} from the
+long as no characters separate the closing @litchar{]} from the
 opening @litchar["{"]. For example, calling @racket[italic] is the
 same as using @racket[elem] with the @racket['italic] style:
 
@@ -491,7 +491,7 @@ label), then the string is typically provided through
 Sometimes, both @litchar{[}...@litchar{]} and
 @litchar["{"]...@litchar["}"] are used, where the former surround
 Racket arguments that precede text to typeset. Finally, if a form is a
-purely Racket-level form with not typeset result, such as a
+purely Racket-level form with no typeset result, such as a
 @racket[require] to import more operations, then typically just
 @litchar["@"] is used.
 
@@ -679,4 +679,4 @@ need more power.
 
 If you are interested in text generation and preprocessing, continue
 with @secref["reader"], but then switch to
-@other-doc['(lib "scribblings/scribble/scribble-pp.scrbl")].
\ No newline at end of file
+@other-doc['(lib "scribblings/scribble/scribble-pp.scrbl")].
diff --git a/scribble-doc/scribblings/scribble/how-to.scrbl b/scribble-doc/scribblings/scribble/how-to.scrbl
index 7c3059f8..f96639d6 100644
--- a/scribble-doc/scribblings/scribble/how-to.scrbl
+++ b/scribble-doc/scribblings/scribble/how-to.scrbl
@@ -175,7 +175,7 @@ The following example illustrates section hyperlinks:
 
 Since the page is so short, the hyperlinks in the above example are
  more effective if you change the @filepath{info.rkt} file to add the
- @racket['multi-file] flag:
+ @racket['multi-page] flag:
 
 @racketblock[
 (define scribblings '(("manual.scrbl" (multi-page))))
diff --git a/scribble-doc/scribblings/scribble/renderer.scrbl b/scribble-doc/scribblings/scribble/renderer.scrbl
index 45e5613d..ce7241fd 100644
--- a/scribble-doc/scribblings/scribble/renderer.scrbl
+++ b/scribble-doc/scribblings/scribble/renderer.scrbl
@@ -3,7 +3,8 @@
           "utils.rkt" 
           (for-label racket/class
                      scribble/render
-                     scribble/xref))
+                     scribble/xref
+                     setup/dirs))
 
 @(define-syntax-rule (defmodule/local lib . content)
    (begin
@@ -354,6 +355,7 @@ Configures the renderer to redirect links to external documents via
 @racket[url], adding a @tt{tag} query element to the end of the
 URL that contains the Base64-encoded, @racket[print]ed, serialized
 original tag (in the sense of @racket[link-element]) for the link.
+The result of @racket[get-doc-search-url] is intended for use as @racket[url].
 
 If the link is based on a cross-reference entry that has a
 document-identifying string (see @racket[load-xref] and its
diff --git a/scribble-doc/scribblings/scribble/running.scrbl b/scribble-doc/scribblings/scribble/running.scrbl
index 2817394c..cf47d16c 100644
--- a/scribble-doc/scribblings/scribble/running.scrbl
+++ b/scribble-doc/scribblings/scribble/running.scrbl
@@ -148,7 +148,7 @@ information for all installed documentation, and @PFlag{m} or
 setup/xref load-collections-xref}.
 
 The @DFlag{redirect-main} flag for HTML output redirects links to the local
-installation's documentation to a given URL, such as
+installation's documentation (not user-scope documentation) to a given URL, such as
 @tt{http://docs.racket-lang.org/}. Beware that documentation links
 sometimes change (although Scribble generates HTML paths and anchors
 in a relatively stable way), so
@@ -156,11 +156,13 @@ in a relatively stable way), so
 more reliable when building with an installation for @italic{version}.
 The @DFlag{redirect-main} flag is ignored for non-HTML output.
 
-The @DFlag{redirect} flag is like @DFlag{redirect-main}, except
-that it builds on the given URL to indicate a cross-reference tag that
-is more stable than an HTML path and anchor (in case the documentation
-for a function changes sections, for example). No server currently
-exists to serve such tag requests, however.
+The @DFlag{redirect} flag is like @DFlag{redirect-main}, except that
+it builds on the given URL to indicate a cross-reference tag that is
+more stable than an HTML path and anchor (in case the documentation
+for a function changes sections, for example), and it can generate
+redirected linked for documentation that is installed in user scope.
+The URL @tt{https://docs.racket-lang.org/local-redirect/index.html} can
+work for these redirections.
 
 For cross-references among documentation that is not part of the
 Racket installation, use @DFlag{info-out} to save information from a
diff --git a/scribble-lib/scribble/acmart.rkt b/scribble-lib/scribble/acmart.rkt
index 103ce33c..a9c10e9d 100644
--- a/scribble-lib/scribble/acmart.rkt
+++ b/scribble-lib/scribble/acmart.rkt
@@ -3,6 +3,7 @@
 (require setup/collects
          racket/contract/base
          racket/list
+         racket/string
          scribble/core
          scribble/base
          scribble/decode
@@ -43,7 +44,7 @@
                                    affiliation?
                                    (listof affiliation?)
                                    #f)
-               #:email (or/c pre-content? email? (listof email?) #f))
+               #:email (or/c pre-content? email? (listof email?)))
               #:rest (listof pre-content?)
               block?)]
  [authorsaddresses (->* ()
@@ -62,6 +63,9 @@
  [email (->* ()
              #:rest (listof pre-content?)
              email?)]
+ [email-string (->* ()
+                    #:rest (listof string?)
+                    email?)]
  [email? (-> any/c boolean?)]
  [affiliation (->* ()
                    (#:position (or/c pre-content? #f)
@@ -367,11 +371,29 @@
 (define (email . text)
   (author-email text))
 
+(define (email-string . text)
+  (define text-escaped
+    (for/list ([str (in-list text)])
+      (escape-email-string str)))
+  (author-email
+   (list
+    (make-element
+     (make-style #f '(exact-chars))
+     text-escaped))))
+
 (define (convert-email email)
   (make-element
    (make-style "SAuthorEmail" command-props)
    (decode-content (email-text email))))
 
+(define escape-email-map
+  #(("#" . "\\#")
+    ("%" . "\\%")))
+(define (escape-email-string str)
+  (for/fold ([str str])
+            ([escape-map (in-vector escape-email-map)])
+    (string-replace str (car escape-map) (cdr escape-map))))
+
 (define (affiliation #:position [position #f]
                      #:institution [institution #f]
                      #:street-address [street-address #f]
diff --git a/scribble-lib/scribble/eval.rkt b/scribble-lib/scribble/eval.rkt
index 5f42914d..249447a2 100644
--- a/scribble-lib/scribble/eval.rkt
+++ b/scribble-lib/scribble/eval.rkt
@@ -325,8 +325,25 @@
     (when expect
       (let ([expect (do-plain-eval ev (car expect) #t)])
         (unless (equal? val expect)
-          (error 'eval "example result check failed: ~.s" s))))
+          (define result "  result: ")
+          (define expected "  expected: ")
+          (error 'eval "example result check failed: ~.s\n~a\n~a\n"
+                 s
+                 (string-append result (to-lines val (string-length result)))
+                 (string-append expected (to-lines expect (string-length expected)))))))
     render+output)
+
+  (define (to-lines exps blank-space)
+    (define blank (make-string blank-space #\space))
+    (apply
+     string-append
+     (for/list ([exp (in-list exps)]
+                [i (in-naturals)])
+       (define first-line? (= i 0))
+       (if (= i 0)
+           (format "~e" exp)
+           (format "\n~a~e" blank exp)))))
+
   (lambda (str)
     (if (eval-results? str)
         (list #f
diff --git a/scribble-lib/scribble/latex-render.rkt b/scribble-lib/scribble/latex-render.rkt
index 5aae9393..546b6f43 100644
--- a/scribble-lib/scribble/latex-render.rkt
+++ b/scribble-lib/scribble/latex-render.rkt
@@ -1150,6 +1150,11 @@
                                 [(#\↝) "$\\leadsto$"]
                                 [(#\↱) "$\\Lsh$"]
                                 [(#\↰) "$\\Rsh$"]
+                                [(#\⇀) "$\\rightharpoonup$"]
+                                [(#\↼) "$\\leftharpoonup$"]
+                                [(#\⇁) "$\\rightharpoondown$"]
+                                [(#\↽) "$\\leftharpoondown$"]
+                                [(#\⇌) "$\\rightleftharpoons$"]
                                 [(#\⇕) "$\\Updownarrow$"]
                                 [(#\א) "$\\aleph$"]
                                 [(#\′) "$\\prime$"]
@@ -1174,6 +1179,7 @@
                                 [(#\∀) "$\\forall$"]
                                 [(#\∃) "$\\exists$"]
                                 [(#\∘) "$\\circ$"]
+                                [(#\∂) "$\\partial$"]
                                 [(#\θ) "$\\theta$"]
                                 [(#\ϑ) "$\\vartheta$"]
                                 [(#\τ) "$\\tau$"]