search: Esc on the line gives it up, Esc in the list lets go of it

Typing after / only tries a search: Esc, or back, puts the list back as it
was before the line opened, and only Enter keeps the results. In the list,
Esc lets go of one thing at a time, so after the document it clears the
search, with the cursor kept on the row it was on; back on a phone does the
same before going up a folder. A late answer to an older search no longer
lands over a newer one, and closing the last document puts the folder back
in the address bar.

docs/wiki/Commands.md

@@ -51,9 +51,9 @@ arguments and `↑` / `↓` recall earlier lines.
 | `Ctrl-P` | go to anything by its name, in every space — words before the last narrow the path, as in proj/ingest; Tab or Ctrl-N/P walk, Enter goes |
 | `b` | the board, on the plan screen: this space's, or the last one shown — 1 … 9 there shows another's |
 | `c` | capture a card into this space's inbox, without leaving here — reading a document, a card about it; Tab on the line makes it a note, or a line in today's entry |
-| `Esc · q` | close the document, and its tile when there are several — Esc first puts down what m picked up |
-| `/` | full-text search, inside the current space and its text files — Tab takes it to every space, Ctrl-N/P walk the results, Enter opens one |
-| `n / N` | next / previous search result, opened beside the results — :noh clears the search |
+| `Esc · q` | close the document, and its tile when there are several — Esc first puts down what m picked up, and in the list lets go of a search |
+| `/` | full-text search, inside the current space and its text files — Tab takes it to every space, Ctrl-N/P walk the results, Enter opens one, Esc gives up |
+| `n / N` | next / previous search result, opened beside the results — Esc or :noh clears the search |
 | `x · dd` | delete what has focus — the row in the list, the document in its pane — into the trash (asks y/N) |
 | `u` | undo the last delete: it comes back out of the trash — :trash has the rest |
 | `gh` | the open document's earlier versions, as diffs — Enter brings one back |

docs/wiki/Files-and-Search.md

@@ -58,8 +58,10 @@ space, and back (`:search!` does the same from the command line).
 
 Results appear as you type, ranked by relevance, each with the space and
 folder it is in. `Ctrl-N` / `Ctrl-P` walk them without leaving the
-line, and `Enter` opens the one lit. Afterwards `n` and `N` open the next and
-previous result beside the list, and `:noh` clears the search.
+line, and `Enter` opens the one lit and keeps the results in the list. `Esc`
+on the line gives the search up, and the list is as it was before `/`.
+Afterwards `n` and `N` open the next and previous result beside the list, and
+`Esc` in the list (or `:noh`, or back on a phone) clears the search.
 
 Cards are searched too, by their title, description and checklist steps. They
 are listed after the documents, under `cards`, with the board and list each is