Review follow-ups on #4977:
- ui-egui: after a rename, the Properties dialog re-selects the edited
widget by object, not by its old index. A button that joins a group is
appended after the group's own buttons, so the old index selected the
group's first button and a nudge moved the wrong one.
- split_merged (join and Duplicate): the new widget takes /A and the
widget triggers of /AA (E X D U Fo Bl PO PC PV PI); the field keeps
K F V C.
- join: a clashing export value searches at most taken + 1 ChoiceN
names, so one is always free, and the names are chosen before
anything is written.
Tests: a_joined_merged_groups_button_keeps_its_actions,
a_joining_button_gets_a_free_export_value_when_choice_names_run_long,
a_radio_button_joining_a_group_by_name_stays_selected (ui-egui). Each
fails with its fix reverted.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SqmHYx8FiWM5PcsoiErgp9
Review follow-up (CodeRabbit): the join read the target's /Kids only when
it was a direct array, so an indirect one was replaced by the moved
buttons alone and the group's own buttons were lost. It now reads
through the reference with tree.rs's list_of, as link() does.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SqmHYx8FiWM5PcsoiErgp9
Review follow-up. A clash is checked against the group's own values only,
and each clashing value gets one fresh ChoiceN shared by every joining
button that had it, so a button repeated on another page stays in unison.
The group's value selects a moved button only when one of the group's own
buttons has it. A joining field that is its own widget leaves the
calculation order too.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SqmHYx8FiWM5PcsoiErgp9
Renaming a radio button to an existing radio group's name was refused as
a duplicate, so buttons placed separately could never become one group.
set_props now moves the renamed field's buttons into the named group
(ISO 32000-2 §12.7.5.2.4: a group is one field whose widgets are its
buttons). A clashing export value is renamed to the first free ChoiceN
in /AP /N, /D and /R; a moved button is on only if its value is the
group's value; merged field+widgets are handled on both sides (the
target split via split_merged, now shared with duplicate_field).
Refused when either group has /Opt, has no button, or the target is
locked.
Adapted from pdfcer (MIT, same author) 79870b56 and 116f48d3.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SqmHYx8FiWM5PcsoiErgp9
