Set Brave default as default search engine

Does not yet support suggestions.

actions.js

@@ -26,13 +26,19 @@ actions.getURLPath = ({ count = 0, domain = false } = {}) => {
 }
 
 actions.copyURLPath = ({ count, domain } = {}) => () =>
-  Clipboard.write(actions.getURLPath({ count, domain })) // TODO: use navigator.clipboard
+  Clipboard.write(actions.getURLPath({ count, domain }))
 
 actions.copyOrgLink = () =>
-  Clipboard.write(`[[${util.getCurrentLocation("href")}][${document.title}]]`) // TODO: use navigator.clipboard
+  Clipboard.write(`[[${util.getCurrentLocation("href")}][${document.title}]]`)
 
 actions.copyMarkdownLink = () =>
-  Clipboard.write(`[${document.title}](${util.getCurrentLocation("href")})`) // TODO: use navigator.clipboard
+  Clipboard.write(
+    // I mostly use this feature to paste links into my Neuron (github.com/srid/neuron) notes.
+    // Due to a bug in Neuron's markdown library (github.com/jgm/commonmark-hs/issues/52),
+    // the vertical bar character breaks lists and titles.
+    // As a workaround, we backslash-escape any vertical bar characters.
+    `[${document.title.replace("|", "\\|")}](${util.getCurrentLocation("href")})`,
+  )
 
 actions.duplicateTab = () =>
   actions.openLink(util.getCurrentLocation("href"), { newTab: true, active: false })()

completions.js

@@ -644,6 +644,14 @@ completions.cp.callback = (response) => parseCrunchbase(response, (person) => {
 
 // ****** Search Engines ****** //
 
+// Brave Search
+completions.bs = {
+  alias:  "bs",
+  name:   "bravesearch",
+  search: "https://search.brave.com/search?q=",
+  compl:  "https://search.brave.com/api/suggest?q=",
+}
+
 // DuckDuckGo
 completions.dd = {
   alias:  "dd",
@@ -1090,6 +1098,13 @@ completions.hn.callback = (response) => {
   })
 }
 
+// Twitter
+completions.tw = {
+  alias:  "tw",
+  name:   "twitter",
+  search: "https://twitter.com/search?q=",
+}
+
 // Reddit
 completions.re = {
   alias:  "re",

conf.js

@@ -7,6 +7,7 @@ util.addSettings({
   hintAlign:                "left",
   omnibarSuggestionTimeout: 500,
   richHintsForKeystroke:    1,
+  defaultSearchEngine:      "bs",
   theme:                    `
     body {
       font-family: "DejaVu Sans", DejaVu, Arial, sans-serif;