an output pane is not a document: +Search/+Help split below the pane that asked, never into a column of their own

placeDoc classified any file pane as a doc, so a +Search opened from a lone
shell took layoutInsertColumn(0) - a whole new leftmost column, shoving every
existing column sideways - and an open results list was then eligible as the
split parent for a real file, stacking documents under the list. An output
buffer has no file behind it and no Save; it is the result list belonging to
the pane that asked for it. Now it is that on both sides of the rule: it
splits below from_id whatever kind of pane that is (a source that died falls
back to stackDocLeft, the same last resort a full column bar uses), and it is
skipped when a real doc hunts for its split parent, so a file opened from a
search row joins the docs instead of the results.

Real docs are untouched: fsearch/rsearch/look-file/tutor/lookpanes all pass
unchanged. psearch is the proof - its results snap was two columns (the shell
pushed to x=70, its gutter run at 70-71) and is now one 140-wide column with
the +Search stacked below at the same x origin.

1 files changed, 109 insertions, 109 deletions

diff --git a/test/snapshots/psearch.golden b/test/snapshots/psearch.golden
index ae5b2b34..c89ec509 100644
--- a/test/snapshots/psearch.golden
+++ b/test/snapshots/psearch.golden
@@ -60,21 +60,21 @@
 |
 |
 |
-== snap results grid=140x30 cursor=74,8
+== snap results grid=140x30 cursor=4,8
 |Kill Newcol Tutor Debug NextColor Dump
-|  NOR /tmp/pardes-snap/psearch/cwd/+Search Del                          NOR /tmp/pardes-snap/psearch/cwd Del
-|     1 @p0:2:3 x MARK a
-|     2 @p0:4:3 x MARK b                                                 x MARK a
-|     3 @p0:6:3 x MARK c                                                 zz
-|     4                                                                  x MARK b
-|                                                                        zz
-|                                                                        x MARK c
-|
-|
-|
-|
+|  NOR /tmp/pardes-snap/psearch/cwd Del
 |
+|  x MARK a
+|  zz
+|  x MARK b
+|  zz
+|  x MARK c
 |
+|  NOR /tmp/pardes-snap/psearch/cwd/+Search Del
+|     1 @p0:2:3 x MARK a
+|     2 @p0:4:3 x MARK b
+|     3 @p0:6:3 x MARK c
+|     4
 |
 |
 |
@@ -91,21 +91,21 @@
 |
 |
 |
-== snap first grid=140x30 cursor=74,3
+== snap first grid=140x30 cursor=4,3
 |Kill Newcol Tutor Debug NextColor Dump
-|  NOR /tmp/pardes-snap/psearch/cwd/+Search Del                          NOR /tmp/pardes-snap/psearch/cwd Del
-|     1 @p0:2:3 x MARK a
-|     2 @p0:4:3 x MARK b                                                 x MARK a
-|     3 @p0:6:3 x MARK c                                                 zz
-|     4                                                                  x MARK b
-|                                                                        zz
-|                                                                        x MARK c
-|
-|
-|
-|
+|  NOR /tmp/pardes-snap/psearch/cwd Del
 |
+|  x MARK a
+|  zz
+|  x MARK b
+|  zz
+|  x MARK c
 |
+|  NOR /tmp/pardes-snap/psearch/cwd/+Search Del
+|     1 @p0:2:3 x MARK a
+|     2 @p0:4:3 x MARK b
+|     3 @p0:6:3 x MARK c
+|     4
 |
 |
 |
@@ -124,50 +124,50 @@
 |
 == style first
 |0: 0-37 #949494,#121212, 38-139 d,#121212,
-|1: 0-1 d,#262626, 2-45 #949494,#121212, 46-69 d,#121212, 70-71 d,#626262, 72-107 #949494,#121212, 108-139 d,#121212,
-|2: 0-1 d,#444444, 2-6 #626262,#080808, 7-69 #d8c8a8,#4a3a1e, 70-71 d,#444444, 72-139 #bdbdbd,#080808,
-|3: 0-1 d,#444444, 2-6 #626262,#080808, 7-22 #bdbdbd,#080808, 23-69 d,#080808, 70-71 d,#444444, 72-139 #bdbdbd,#080808,
-|4: 0-1 d,#444444, 2-6 #626262,#080808, 7-22 #bdbdbd,#080808, 23-69 d,#080808, 70-71 d,#444444, 72-139 #bdbdbd,#080808,
-|5: 0-1 d,#444444, 2-6 #626262,#080808, 7-69 d,#080808, 70-71 d,#444444, 72-139 #bdbdbd,#080808,
-|6: 0-1 d,#444444, 2-6 #626262,#080808, 7-69 d,#080808, 70-71 d,#444444, 72-139 #bdbdbd,#080808,
-|7: 0-1 d,#444444, 2-6 #626262,#080808, 7-69 d,#080808, 70-71 d,#444444, 72-139 #bdbdbd,#080808,
-|8: 0-1 d,#444444, 2-6 #626262,#080808, 7-69 d,#080808, 70-71 d,#444444, 72-139 #bdbdbd,#080808,
-|9: 0-1 d,#444444, 2-6 #626262,#080808, 7-69 d,#080808, 70-71 d,#444444, 72-139 #bdbdbd,#080808,
-|10: 0-1 d,#444444, 2-6 #626262,#080808, 7-69 d,#080808, 70-71 d,#444444, 72-139 #bdbdbd,#080808,
-|11: 0-1 d,#444444, 2-6 #626262,#080808, 7-69 d,#080808, 70-71 d,#444444, 72-139 #bdbdbd,#080808,
-|12: 0-1 d,#444444, 2-6 #626262,#080808, 7-69 d,#080808, 70-71 d,#444444, 72-139 #bdbdbd,#080808,
-|13: 0-1 d,#444444, 2-6 #626262,#080808, 7-69 d,#080808, 70-71 d,#444444, 72-139 #bdbdbd,#080808,
-|14: 0-1 d,#444444, 2-6 #626262,#080808, 7-69 d,#080808, 70-71 d,#444444, 72-139 #bdbdbd,#080808,
-|15: 0-1 d,#444444, 2-6 #626262,#080808, 7-69 d,#080808, 70-71 d,#444444, 72-139 #bdbdbd,#080808,
-|16: 0-1 d,#444444, 2-6 #626262,#080808, 7-69 d,#080808, 70-71 d,#444444, 72-139 #bdbdbd,#080808,
-|17: 0-1 d,#444444, 2-6 #626262,#080808, 7-69 d,#080808, 70-71 d,#444444, 72-139 #bdbdbd,#080808,
-|18: 0-1 d,#444444, 2-6 #626262,#080808, 7-69 d,#080808, 70-71 d,#444444, 72-139 #bdbdbd,#080808,
-|19: 0-1 d,#444444, 2-6 #626262,#080808, 7-69 d,#080808, 70-71 d,#444444, 72-139 #bdbdbd,#080808,
-|20: 0-1 d,#444444, 2-6 #626262,#080808, 7-69 d,#080808, 70-71 d,#444444, 72-139 #bdbdbd,#080808,
-|21: 0-1 d,#444444, 2-6 #626262,#080808, 7-69 d,#080808, 70-71 d,#444444, 72-139 #bdbdbd,#080808,
-|22: 0-1 d,#444444, 2-6 #626262,#080808, 7-69 d,#080808, 70-71 d,#444444, 72-139 #bdbdbd,#080808,
-|23: 0-1 d,#444444, 2-6 #626262,#080808, 7-69 d,#080808, 70-71 d,#444444, 72-139 #bdbdbd,#080808,
-|24: 0-1 d,#444444, 2-6 #626262,#080808, 7-69 d,#080808, 70-71 d,#444444, 72-139 #bdbdbd,#080808,
-|25: 0-1 d,#444444, 2-6 #626262,#080808, 7-69 d,#080808, 70-71 d,#444444, 72-139 #bdbdbd,#080808,
-|26: 0-1 d,#444444, 2-6 #626262,#080808, 7-69 d,#080808, 70-71 d,#444444, 72-139 #bdbdbd,#080808,
-|27: 0-1 d,#444444, 2-6 #626262,#080808, 7-69 d,#080808, 70-71 d,#444444, 72-139 #bdbdbd,#080808,
-|28: 0-1 d,#444444, 2-6 #626262,#080808, 7-69 d,#080808, 70-71 d,#444444, 72-139 #bdbdbd,#080808,
-|29: 0-1 d,#444444, 2-6 #626262,#080808, 7-69 d,#080808, 70-71 d,#444444, 72-139 #bdbdbd,#080808,
-== snap second grid=140x30 cursor=74,5
+|1: 0-1 d,#626262, 2-37 #949494,#121212, 38-139 d,#121212,
+|2: 0-1 d,#444444, 2-139 #bdbdbd,#080808,
+|3: 0-1 d,#444444, 2-139 #bdbdbd,#080808,
+|4: 0-1 d,#444444, 2-139 #bdbdbd,#080808,
+|5: 0-1 d,#444444, 2-139 #bdbdbd,#080808,
+|6: 0-1 d,#444444, 2-139 #bdbdbd,#080808,
+|7: 0-1 d,#444444, 2-139 #bdbdbd,#080808,
+|8: 0-1 d,#444444, 2-139 #bdbdbd,#080808,
+|9: 0-1 d,#262626, 2-45 #949494,#121212, 46-139 d,#121212,
+|10: 0-1 d,#444444, 2-6 #626262,#080808, 7-139 #d8c8a8,#4a3a1e,
+|11: 0-1 d,#444444, 2-6 #626262,#080808, 7-22 #bdbdbd,#080808, 23-139 d,#080808,
+|12: 0-1 d,#444444, 2-6 #626262,#080808, 7-22 #bdbdbd,#080808, 23-139 d,#080808,
+|13: 0-1 d,#444444, 2-6 #626262,#080808, 7-139 d,#080808,
+|14: 0-1 d,#444444, 2-6 #626262,#080808, 7-139 d,#080808,
+|15: 0-1 d,#444444, 2-6 #626262,#080808, 7-139 d,#080808,
+|16: 0-1 d,#444444, 2-6 #626262,#080808, 7-139 d,#080808,
+|17: 0-1 d,#444444, 2-6 #626262,#080808, 7-139 d,#080808,
+|18: 0-1 d,#444444, 2-6 #626262,#080808, 7-139 d,#080808,
+|19: 0-1 d,#444444, 2-6 #626262,#080808, 7-139 d,#080808,
+|20: 0-1 d,#444444, 2-6 #626262,#080808, 7-139 d,#080808,
+|21: 0-1 d,#444444, 2-6 #626262,#080808, 7-139 d,#080808,
+|22: 0-1 d,#444444, 2-6 #626262,#080808, 7-139 d,#080808,
+|23: 0-1 d,#444444, 2-6 #626262,#080808, 7-139 d,#080808,
+|24: 0-1 d,#444444, 2-6 #626262,#080808, 7-139 d,#080808,
+|25: 0-1 d,#444444, 2-6 #626262,#080808, 7-139 d,#080808,
+|26: 0-1 d,#444444, 2-6 #626262,#080808, 7-139 d,#080808,
+|27: 0-1 d,#444444, 2-6 #626262,#080808, 7-139 d,#080808,
+|28: 0-1 d,#444444, 2-6 #626262,#080808, 7-139 d,#080808,
+|29: 0-1 d,#444444, 2-6 #626262,#080808, 7-139 d,#080808,
+== snap second grid=140x30 cursor=4,5
 |Kill Newcol Tutor Debug NextColor Dump
-|  NOR /tmp/pardes-snap/psearch/cwd/+Search Del                          NOR /tmp/pardes-snap/psearch/cwd Del
-|     1 @p0:2:3 x MARK a
-|     2 @p0:4:3 x MARK b                                                 x MARK a
-|     3 @p0:6:3 x MARK c                                                 zz
-|     4                                                                  x MARK b
-|                                                                        zz
-|                                                                        x MARK c
-|
-|
-|
-|
+|  NOR /tmp/pardes-snap/psearch/cwd Del
 |
+|  x MARK a
+|  zz
+|  x MARK b
+|  zz
+|  x MARK c
 |
+|  NOR /tmp/pardes-snap/psearch/cwd/+Search Del
+|     1 @p0:2:3 x MARK a
+|     2 @p0:4:3 x MARK b
+|     3 @p0:6:3 x MARK c
+|     4
 |
 |
 |
@@ -184,21 +184,21 @@
 |
 |
 |
-== snap back grid=140x30 cursor=74,3
+== snap back grid=140x30 cursor=4,3
 |Kill Newcol Tutor Debug NextColor Dump
-|  NOR /tmp/pardes-snap/psearch/cwd/+Search Del                          NOR /tmp/pardes-snap/psearch/cwd Del
-|     1 @p0:2:3 x MARK a
-|     2 @p0:4:3 x MARK b                                                 x MARK a
-|     3 @p0:6:3 x MARK c                                                 zz
-|     4                                                                  x MARK b
-|                                                                        zz
-|                                                                        x MARK c
-|
-|
-|
-|
+|  NOR /tmp/pardes-snap/psearch/cwd Del
 |
+|  x MARK a
+|  zz
+|  x MARK b
+|  zz
+|  x MARK c
 |
+|  NOR /tmp/pardes-snap/psearch/cwd/+Search Del
+|     1 @p0:2:3 x MARK a
+|     2 @p0:4:3 x MARK b
+|     3 @p0:6:3 x MARK c
+|     4
 |
 |
 |
@@ -215,18 +215,18 @@
 |
 |
 |
-== snap nomatch grid=140x30 cursor=74,3
+== snap nomatch grid=140x30 cursor=4,3
 |Kill Newcol Tutor Debug NextColor Dump
-|  NOR /tmp/pardes-snap/psearch/cwd/+Search Del                          NOR /tmp/pardes-snap/psearch/cwd Del
-|     1
-|                                                                        x MARK a
-|                                                                        zz
-|                                                                        x MARK b
-|                                                                        zz
-|                                                                        x MARK c
-|
+|  NOR /tmp/pardes-snap/psearch/cwd Del
 |
+|  x MARK a
+|  zz
+|  x MARK b
+|  zz
+|  x MARK c
 |
+|  NOR /tmp/pardes-snap/psearch/cwd/+Search Del
+|     1
 |
 |
 |
@@ -246,18 +246,18 @@
 |
 |
 |
-== snap ttyinert grid=140x30 cursor=74,8
+== snap ttyinert grid=140x30 cursor=4,8
 |Kill Newcol Tutor Debug NextColor Dump
-|  NOR /tmp/pardes-snap/psearch/cwd/+Search Del                          TTY /tmp/pardes-snap/psearch/cwd Del
-|     1                                                                  $ printf 'x MA''RK a\nzz\nx MA''RK b\nzz\nx MA''RK c\n'
-|                                                                        x MARK a
-|                                                                        zz
-|                                                                        x MARK b
-|                                                                        zz
-|                                                                        x MARK c
-|                                                                        $
-|
-|
+|  TTY /tmp/pardes-snap/psearch/cwd Del
+|  $ printf 'x MA''RK a\nzz\nx MA''RK b\nzz\nx MA''RK c\n'
+|  x MARK a
+|  zz
+|  x MARK b
+|  zz
+|  x MARK c
+|  $
+|  NOR /tmp/pardes-snap/psearch/cwd/+Search Del
+|     1
 |
 |
 |
@@ -277,21 +277,21 @@
 |
 |
 |
-== snap rightsearch grid=140x30 cursor=74,3
+== snap rightsearch grid=140x30 cursor=4,3
 |Kill Newcol Tutor Debug NextColor Dump
-|  NOR /tmp/pardes-snap/psearch/cwd/+Search Del                          NOR /tmp/pardes-snap/psearch/cwd Del
-|     1 @p0:2:3 x MARK a
-|     2 @p0:4:3 x MARK b                                                 x MARK a
-|     3 @p0:6:3 x MARK c                                                 zz
-|     4                                                                  x MARK b
-|                                                                        zz
-|                                                                        x MARK c
-|
-|
-|
-|
+|  NOR /tmp/pardes-snap/psearch/cwd Del
 |
+|  x MARK a
+|  zz
+|  x MARK b
+|  zz
+|  x MARK c
 |
+|  NOR /tmp/pardes-snap/psearch/cwd/+Search Del
+|     1 @p0:2:3 x MARK a
+|     2 @p0:4:3 x MARK b
+|     3 @p0:6:3 x MARK c
+|     4
 |
 |
 |