A middle or right sweep over a column's or the workspace's tag runs or looks for what it swept, as a pane tag's does

Both headers acted on the press: a middle or right press ran, or looked
for, the word under it (or the header's selection when it was on that) at
once, so a drag had nothing left to do. A sweep of `echo SWEPT` in a column
tag ran a bare `echo`. They have done so since the headers were drawn apart
from the panes; it is no regression, and the -l/Restore allocator fix
(ompukopz) does not touch it.

Now a press on a header holds a HeaderSweep (the column by its serial, or
the workspace), which the drag extends, held to the header's row and text
as a pane tag's sweep is. It is painted in its button's tint meanwhile, and
the release runs what it swept in that header's context; a release that has
not moved runs the word or selection a click always did. The other of
middle and right cancels it (acme 2-3/3-2); the select button is inert, as
a header's command already takes the held selection as its argument.

Running on the release, a builtin from a header is announced as one from a
pane tag is: the press used to set the announcement and the release clear it
at once. find, restore, theme, topbarexec, ttyhelp, tutor and windowops
re-recorded for that badge alone.

headersweep.snap sweeps the column and workspace tags with the middle
button and a word part with the right one, and cancels a sweep;
headersweep-restored.snap sweeps both after Dump and Restore.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

1 files changed, 49 insertions, 0 deletions

diff --git a/test/snapshots/headersweep-restored.golden b/test/snapshots/headersweep-restored.golden
new file mode 100644
index 00000000..765f221f
--- /dev/null
+++ b/test/snapshots/headersweep-restored.golden
@@ -0,0 +1,49 @@
+== style col-sweeping grid=120x21
+|0: 0-119 #b2c3b8,#1d2824,
+|1: 0-1 d,#887455, 2-2 d,#314738, 3-35 #becfc4,#314738, 36-43 #f5f7ee,#5b7e5a, 44-59 #becfc4,#314738, 60-61 #becfc4,#887455, 62-62 #becfc4,#1d2824, 63-119 #b2c3b8,#1d2824,
+|2: 0-1 d,#add38a, 2-2 d,#314738, 3-44 #becfc4,#314738, 45-53 #dfbce5,#314738, 54-59 #becfc4,#314738, 60-61 #becfc4,#496656, 62-62 #becfc4,#1d2824, 63-104 #b2c3b8,#1d2824, 105-113 #d3b0d9,#1d2824, 114-119 #b2c3b8,#1d2824,
+|3: 0-2 d,#314738, 3-59 #becfc4,#314738, 60-62 #becfc4,#1d2824, 63-119 #b2c3b8,#1d2824,
+|4: 0-0 d,#608269, 1-1 d,#0d1410, 2-59 #e5eee5,#0d1410, 60-60 #e5eee5,#608269, 61-119 #e5eee5,#0d1410,
+|5: 0-0 d,#608269, 1-1 d,#0d1410, 2-59 #e5eee5,#0d1410, 60-60 #e5eee5,#608269, 61-119 #e5eee5,#0d1410,
+|6: 0-0 d,#608269, 1-1 d,#0d1410, 2-23 #e5eee5,#0d1410,f 24-59 #e5eee5,#0d1410, 60-60 #e5eee5,#608269, 61-61 #e5eee5,#0d1410, 62-83 #e5eee5,#0d1410,f 84-119 #e5eee5,#0d1410,
+|7: 0-0 d,#608269, 1-59 d,#0d1410, 60-60 d,#608269, 61-119 d,#0d1410,
+|8: 0-0 d,#608269, 1-59 d,#0d1410, 60-60 d,#608269, 61-119 d,#0d1410,
+|9: 0-0 d,#608269, 1-59 d,#0d1410, 60-60 d,#608269, 61-119 d,#0d1410,
+|10: 0-0 d,#608269, 1-59 d,#0d1410, 60-60 d,#608269, 61-119 d,#0d1410,
+|11: 0-0 d,#608269, 1-59 d,#0d1410, 60-60 d,#608269, 61-119 d,#0d1410,
+|12: 0-1 d,#496656, 2-2 d,#1d2824, 3-44 #b2c3b8,#1d2824, 45-53 #d3b0d9,#1d2824, 54-59 #b2c3b8,#1d2824, 60-60 #b2c3b8,#608269, 61-119 #b2c3b8,#0d1410,
+|13: 0-2 d,#1d2824, 3-59 #b2c3b8,#1d2824, 60-60 #b2c3b8,#608269, 61-119 #b2c3b8,#0d1410,
+|14: 0-0 d,#608269, 1-1 d,#0d1410, 2-59 #e5eee5,#0d1410, 60-60 #e5eee5,#608269, 61-119 #e5eee5,#0d1410,
+|15: 0-0 d,#608269, 1-1 d,#0d1410, 2-59 #e5eee5,#0d1410, 60-60 #e5eee5,#608269, 61-119 #e5eee5,#0d1410,
+|16: 0-0 d,#608269, 1-1 d,#0d1410, 2-23 #e5eee5,#0d1410,f 24-59 #e5eee5,#0d1410, 60-60 #e5eee5,#608269, 61-119 #e5eee5,#0d1410,
+|17: 0-0 d,#608269, 1-59 d,#0d1410, 60-60 d,#608269, 61-119 d,#0d1410,
+|18: 0-0 d,#608269, 1-59 d,#0d1410, 60-60 d,#608269, 61-119 d,#0d1410,
+|19: 0-0 d,#608269, 1-59 d,#0d1410, 60-60 d,#608269, 61-119 d,#0d1410,
+|20: 0-0 d,#608269, 1-59 d,#0d1410, 60-60 d,#608269, 61-119 d,#0d1410,
+== snap col-swept grid=120x21 cursor=4,9
+|Newcol Joincol Find Grep Help Changelog Tutor Dump NextColor Debug Exit Restore /tmp/pardes-snap/headersweep-restored/du
+|   New Tty Find Grep Joincol Delcol echo RE''STORED-COL        New Tty Find Grep Joincol Delcol
+|   /tmp/pardes-snap/headersweep-restored/cwd Tty+bash Save M   /tmp/pardes-snap/headersweep-restored/cwd Tty+bash Save M
+|   ode Filter Collapse Del                                     ode Filter Collapse Del
+|  $ ls                                                        $ ls
+|  $                                                           $
+|  ── restored history ──                                      ── restored history ──
+|  echo RE''STORED-COL
+|  RESTORED-COL
+|
+|
+|
+|   /tmp/pardes-snap/headersweep-restored/cwd Tty+bash Save M
+|   ode Filter Collapse Del
+|  $ ls
+|  $
+|  ── restored history ──
+== style ws-sweeping grid=120x21
+|0: 0-100 #b2c3b8,#1d2824, 101-108 #f5f7ee,#5b7e5a, 109-119 #b2c3b8,#1d2824,
+|1: 0-1 d,#887455, 2-2 d,#314738, 3-59 #becfc4,#314738, 60-61 #becfc4,#887455, 62-62 #becfc4,#1d2824, 63-119 #b2c3b8,#1d2824,
+|7: 0-0 d,#608269, 1-1 d,#0d1410, 2-59 #e5eee5,#0d1410, 60-60 #e5eee5,#608269, 61-119 #e5eee5,#0d1410,
+|8: 0-0 d,#608269, 1-1 d,#0d1410, 2-59 #e5eee5,#0d1410, 60-60 #e5eee5,#608269, 61-119 #e5eee5,#0d1410,
+== snap ws-swept grid=120x21 cursor=4,11
+|0: Newcol Joincol Find Grep Help Changelog Tutor Dump NextColor Debug Exit Restore /tmp/pardes-snap/headersweep-restored ec
+|9:   echo RE''STORED-WS
+|10:   RESTORED-WS