firefox: re-select replaced selection.

* firefox/jp-hash.js (jp_hash_edit): After replacing
the content of the text object, select that portion of
it which replaced the prior selection.

1 files changed, 5 insertions, 1 deletions

diff --git a/firefox/jp-hash.js b/firefox/jp-hash.js
index 4eaa42d..4e76e99 100644
--- a/firefox/jp-hash.js
+++ b/firefox/jp-hash.js
@@ -109,7 +109,11 @@ async function jp_hash_edit(elem)
       let sel = elem.value.substring(start, end);
       let tail = elem.value.substring(end, len);
 
-      jphash(sel, (jph) => { elem.value = head + jph + tail; });
+      jphash(sel, (jph) => {
+                    elem.value = head + jph + tail;
+                    elem.selectionStart = start;
+                    elem.selectionEnd = start + jph.length;
+                  });
     } else {
       jphash(elem.value, (jph) => { elem.value = jph; });
     }