diff tests/test-topic.t @ 6206:2ec9c87e8574

topic: allow unicode symbols in names as long as they are alphanumeric

I decided to relax this logic just a little bit to allow unicode "word
characters" (i.e. everything that a unicode regex \w matches). This is still
limiting cases that core allows (for branches and bookmarks): core only forbids
certain byte values (like null byte, see scmutil.checknewlabel function).

This extra check for topic names could be dropped altogether and we could rely
solely on checknewlabel(), but I don't know if there isn't some corner case
that topics can't handle. Needs more investigation (and tests).

--- a/tests/test-topic.t	Sun Mar 13 19:42:10 2022 +0300
+++ b/tests/test-topic.t	Sat Mar 19 19:13:00 2022 +0300
@@ -317,6 +317,24 @@
   $ hg topic
    * topicflag (0 changesets)
 
+Non-ascii topic name
+
+  $ hg --encoding utf-8 topic æ
+  $ hg topics
+   * \xc3\xa6 (0 changesets) (esc)
+  $ hg --encoding latin1 topics
+   * \xc3\xa6 (0 changesets) (esc)
+
+  $ hg --encoding utf-8 topic ©
+  abort: invalid topic name: '\xc2\xa9' (esc)
+  (topic names can only consist of alphanumeric, '-' '_' and '.' characters)
+  [255]
+
+  $ hg --encoding latin1 topic æ
+  abort: invalid topic name: '\xc3\xa6' (esc)
+  (topic names can only consist of alphanumeric, '-' '_' and '.' characters)
+  [255]
+
 Make a topic
 
   $ hg topic narf