51348: Fix subscript completion bugs inside ~[...]

When completing inside ~[...] (_with_ the trailing `]` present), the
following bugs occured:
- Subscript completion was skipped entirely when there were one or more
  slashes ('/') in the subscript, which is incorrect, since slashes are
  allowed there.
- Instead of going through _complete, $_comps[-subscript-] was called
  immediately, causing _setup to be skipped.
- If succesful, _main_complete was exited right after, causing
  menu-style, comppostfuncs and other essential completion features to
  be skipped.

1 files changed, 13 insertions, 3 deletions

diff --git a/Test/Y01completion.ztst b/Test/Y01completion.ztst
index b3ec12e52..a4060e9a4 100644
--- a/Test/Y01completion.ztst
+++ b/Test/Y01completion.ztst
@@ -75,17 +75,27 @@
 >line: {: ~user2}{}
 >line: {: ~user1}{}
 
-  comptesteval 'zsh_directory_name() { compadd "$expl[@]" -- name1 name2 }'
+  comptesteval 'zsh_directory_name() { compadd "$expl[@]" -- name/1 name2 }'
   comptest $': ~[\t\t\t\t'
 0:dynamic directory names after ~[
 >line: {: ~[name}{}
 >line: {: ~[name}{}
 >DESCRIPTION:{dynamically named directory}
->NO:{name1}
+>NO:{name/1}
 >NO:{name2}
->line: {: ~[name1]}{}
+>line: {: ~[name/1]}{}
 >line: {: ~[name2]}{}
 
+  comptest $': ~[]\C-b\t\t\t\t'
+0:dynamic directory names inside ~[...]
+>line: {: ~[name}{]}
+>line: {: ~[name}{]}
+>DESCRIPTION:{dynamically named directory}
+>NO:{name/1}
+>NO:{name2}
+>line: {: ~[name/1}{]}
+>line: {: ~[name2}{]}
+
   comptest $'echo ;:\C-b\C-b\t'
 0:directories and files before separator
 >line: {echo }{;:}