host: the core owns the event loop; every platform becomes a vtable of optional methods

1 files changed, 83 insertions, 83 deletions

diff --git a/test/snapshots/ttylook.golden b/test/snapshots/ttylook.golden
index d5740e5d..70992060 100644
--- a/test/snapshots/ttylook.golden
+++ b/test/snapshots/ttylook.golden
@@ -1,6 +1,6 @@
 == snap tok1 grid=120x30 cursor=2,3
-|New Newcol Find Grep Help Tutor Dump NextColor Debug Kill
-|  /tmp/pardes-snap/ttylook/cwd New Del Filter                 /tmp/pardes-snap/ttylook/cwd New Del Filter
+|New Newcol Joincol Find Grep Help Changelog Tutor Dump NextColor Debug Kill
+|  /tmp/pardes-snap/ttylook/cwd New Newtty Del Filter          /tmp/pardes-snap/ttylook/cwd New Newtty Del Filter
 |  ls                                                          ls
 |  big.txt  plain.txt  sub                                     big.txt  plain.txt  sub
 |
@@ -15,7 +15,7 @@
 |
 |
 |
-|  /tmp/pardes-snap/ttylook/cwd New Del Filter
+|  /tmp/pardes-snap/ttylook/cwd New Newtty Del Filter
 |  ls
 |  big.txt  plain.txt  sub
 |
@@ -30,39 +30,39 @@
 |
 |
 == style tok1
-|0: 0-56 #949494,#121212, 57-119 d,#121212,
-|1: 0-1 #ffffff,#626262, 2-44 #949494,#121212, 45-59 d,#121212, 60-61 #ffffff,#262626, 62-104 #949494,#121212, 105-119 d,#121212,
-|2: 0-0 d,#444444, 1-1 d,#080808, 2-59 #bdbdbd,#080808, 60-60 d,#444444, 61-61 d,#080808, 62-119 #bdbdbd,#080808,
-|3: 0-0 d,#444444, 1-1 d,#080808, 2-8 #080808,#80a0ff, 9-59 #bdbdbd,#080808, 60-60 d,#444444, 61-61 d,#080808, 62-119 #bdbdbd,#080808,
-|4: 0-0 d,#444444, 1-1 d,#080808, 2-59 #bdbdbd,#080808, 60-60 d,#444444, 61-61 d,#080808, 62-119 #bdbdbd,#080808,
-|5: 0-0 d,#444444, 1-1 d,#080808, 2-59 #bdbdbd,#080808, 60-60 d,#444444, 61-61 d,#080808, 62-119 #bdbdbd,#080808,
-|6: 0-0 d,#444444, 1-1 d,#080808, 2-59 #bdbdbd,#080808, 60-60 d,#444444, 61-61 d,#080808, 62-119 #bdbdbd,#080808,
-|7: 0-0 d,#444444, 1-1 d,#080808, 2-59 #bdbdbd,#080808, 60-60 d,#444444, 61-61 d,#080808, 62-119 #bdbdbd,#080808,
-|8: 0-0 d,#444444, 1-1 d,#080808, 2-59 #bdbdbd,#080808, 60-60 d,#444444, 61-61 d,#080808, 62-119 #bdbdbd,#080808,
-|9: 0-0 d,#444444, 1-1 d,#080808, 2-59 #bdbdbd,#080808, 60-60 d,#444444, 61-61 d,#080808, 62-119 #bdbdbd,#080808,
-|10: 0-0 d,#444444, 1-1 d,#080808, 2-59 #bdbdbd,#080808, 60-60 d,#444444, 61-61 d,#080808, 62-119 #bdbdbd,#080808,
-|11: 0-0 d,#444444, 1-1 d,#080808, 2-59 #bdbdbd,#080808, 60-60 d,#444444, 61-61 d,#080808, 62-119 #bdbdbd,#080808,
-|12: 0-0 d,#444444, 1-1 d,#080808, 2-59 #bdbdbd,#080808, 60-60 d,#444444, 61-61 d,#080808, 62-119 #bdbdbd,#080808,
-|13: 0-0 d,#444444, 1-1 d,#080808, 2-59 #bdbdbd,#080808, 60-60 d,#444444, 61-61 d,#080808, 62-119 #bdbdbd,#080808,
-|14: 0-0 d,#444444, 1-1 d,#080808, 2-59 #bdbdbd,#080808, 60-60 d,#444444, 61-61 d,#080808, 62-119 #bdbdbd,#080808,
-|15: 0-0 d,#444444, 1-1 d,#080808, 2-59 #bdbdbd,#080808, 60-60 d,#444444, 61-61 d,#080808, 62-119 #bdbdbd,#080808,
-|16: 0-1 #ffffff,#262626, 2-44 #949494,#121212, 45-59 d,#121212, 60-60 d,#444444, 61-61 d,#080808, 62-119 #bdbdbd,#080808,
-|17: 0-0 d,#444444, 1-1 d,#080808, 2-59 #bdbdbd,#080808, 60-60 d,#444444, 61-61 d,#080808, 62-119 #bdbdbd,#080808,
-|18: 0-0 d,#444444, 1-1 d,#080808, 2-59 #bdbdbd,#080808, 60-60 d,#444444, 61-61 d,#080808, 62-119 #bdbdbd,#080808,
-|19: 0-0 d,#444444, 1-1 d,#080808, 2-59 #bdbdbd,#080808, 60-60 d,#444444, 61-61 d,#080808, 62-119 #bdbdbd,#080808,
-|20: 0-0 d,#444444, 1-1 d,#080808, 2-59 #bdbdbd,#080808, 60-60 d,#444444, 61-61 d,#080808, 62-119 #bdbdbd,#080808,
-|21: 0-0 d,#444444, 1-1 d,#080808, 2-59 #bdbdbd,#080808, 60-60 d,#444444, 61-61 d,#080808, 62-119 #bdbdbd,#080808,
-|22: 0-0 d,#444444, 1-1 d,#080808, 2-59 #bdbdbd,#080808, 60-60 d,#444444, 61-61 d,#080808, 62-119 #bdbdbd,#080808,
-|23: 0-0 d,#444444, 1-1 d,#080808, 2-59 #bdbdbd,#080808, 60-60 d,#444444, 61-61 d,#080808, 62-119 #bdbdbd,#080808,
-|24: 0-0 d,#444444, 1-1 d,#080808, 2-59 #bdbdbd,#080808, 60-60 d,#444444, 61-61 d,#080808, 62-119 #bdbdbd,#080808,
-|25: 0-0 d,#444444, 1-1 d,#080808, 2-59 #bdbdbd,#080808, 60-60 d,#444444, 61-61 d,#080808, 62-119 #bdbdbd,#080808,
-|26: 0-0 d,#444444, 1-1 d,#080808, 2-59 #bdbdbd,#080808, 60-60 d,#444444, 61-61 d,#080808, 62-119 #bdbdbd,#080808,
-|27: 0-0 d,#444444, 1-1 d,#080808, 2-59 #bdbdbd,#080808, 60-60 d,#444444, 61-61 d,#080808, 62-119 #bdbdbd,#080808,
-|28: 0-0 d,#444444, 1-1 d,#080808, 2-59 #bdbdbd,#080808, 60-60 d,#444444, 61-61 d,#080808, 62-119 #bdbdbd,#080808,
-|29: 0-0 d,#444444, 1-1 d,#080808, 2-59 #bdbdbd,#080808, 60-60 d,#444444, 61-61 d,#080808, 62-119 #bdbdbd,#080808,
+|0: 0-74 #949494,#121212, 75-119 d,#121212,
+|1: 0-1 #ffffff,#626262, 2-51 #949494,#121212, 52-59 d,#121212, 60-61 #ffffff,#262626, 62-111 #949494,#121212, 112-119 d,#121212,
+|2: 0-0 d,#444444, 1-1 d,#080808, 2-3 #bdbdbd,#080808, 4-59 d,#080808, 60-60 d,#444444, 61-61 d,#080808, 62-63 #bdbdbd,#080808, 64-119 d,#080808,
+|3: 0-0 d,#444444, 1-1 d,#080808, 2-8 #080808,#80a0ff, 9-24 #bdbdbd,#080808, 25-59 d,#080808, 60-60 d,#444444, 61-61 d,#080808, 62-84 #bdbdbd,#080808, 85-119 d,#080808,
+|4: 0-0 d,#444444, 1-59 d,#080808, 60-60 d,#444444, 61-119 d,#080808,
+|5: 0-0 d,#444444, 1-59 d,#080808, 60-60 d,#444444, 61-119 d,#080808,
+|6: 0-0 d,#444444, 1-59 d,#080808, 60-60 d,#444444, 61-119 d,#080808,
+|7: 0-0 d,#444444, 1-59 d,#080808, 60-60 d,#444444, 61-119 d,#080808,
+|8: 0-0 d,#444444, 1-59 d,#080808, 60-60 d,#444444, 61-119 d,#080808,
+|9: 0-0 d,#444444, 1-59 d,#080808, 60-60 d,#444444, 61-119 d,#080808,
+|10: 0-0 d,#444444, 1-59 d,#080808, 60-60 d,#444444, 61-119 d,#080808,
+|11: 0-0 d,#444444, 1-59 d,#080808, 60-60 d,#444444, 61-119 d,#080808,
+|12: 0-0 d,#444444, 1-59 d,#080808, 60-60 d,#444444, 61-119 d,#080808,
+|13: 0-0 d,#444444, 1-59 d,#080808, 60-60 d,#444444, 61-119 d,#080808,
+|14: 0-0 d,#444444, 1-59 d,#080808, 60-60 d,#444444, 61-119 d,#080808,
+|15: 0-0 d,#444444, 1-59 d,#080808, 60-60 d,#444444, 61-119 d,#080808,
+|16: 0-1 #ffffff,#262626, 2-51 #949494,#121212, 52-59 d,#121212, 60-60 d,#444444, 61-119 d,#080808,
+|17: 0-0 d,#444444, 1-1 d,#080808, 2-3 #bdbdbd,#080808, 4-59 d,#080808, 60-60 d,#444444, 61-119 d,#080808,
+|18: 0-0 d,#444444, 1-1 d,#080808, 2-24 #bdbdbd,#080808, 25-59 d,#080808, 60-60 d,#444444, 61-119 d,#080808,
+|19: 0-0 d,#444444, 1-59 d,#080808, 60-60 d,#444444, 61-119 d,#080808,
+|20: 0-0 d,#444444, 1-59 d,#080808, 60-60 d,#444444, 61-119 d,#080808,
+|21: 0-0 d,#444444, 1-59 d,#080808, 60-60 d,#444444, 61-119 d,#080808,
+|22: 0-0 d,#444444, 1-59 d,#080808, 60-60 d,#444444, 61-119 d,#080808,
+|23: 0-0 d,#444444, 1-59 d,#080808, 60-60 d,#444444, 61-119 d,#080808,
+|24: 0-0 d,#444444, 1-59 d,#080808, 60-60 d,#444444, 61-119 d,#080808,
+|25: 0-0 d,#444444, 1-59 d,#080808, 60-60 d,#444444, 61-119 d,#080808,
+|26: 0-0 d,#444444, 1-59 d,#080808, 60-60 d,#444444, 61-119 d,#080808,
+|27: 0-0 d,#444444, 1-59 d,#080808, 60-60 d,#444444, 61-119 d,#080808,
+|28: 0-0 d,#444444, 1-59 d,#080808, 60-60 d,#444444, 61-119 d,#080808,
+|29: 0-0 d,#444444, 1-59 d,#080808, 60-60 d,#444444, 61-119 d,#080808,
 == snap tok2 grid=120x30 cursor=11,3
-|New Newcol Find Grep Help Tutor Dump NextColor Debug Kill
-|  /tmp/pardes-snap/ttylook/cwd New Del Filter                 /tmp/pardes-snap/ttylook/cwd New Del Filter
+|New Newcol Joincol Find Grep Help Changelog Tutor Dump NextColor Debug Kill
+|  /tmp/pardes-snap/ttylook/cwd New Newtty Del Filter          /tmp/pardes-snap/ttylook/cwd New Newtty Del Filter
 |  ls                                                          ls
 |  big.txt  plain.txt  sub                                     big.txt  plain.txt  sub
 |
@@ -77,7 +77,7 @@
 |
 |
 |
-|  /tmp/pardes-snap/ttylook/cwd New Del Filter
+|  /tmp/pardes-snap/ttylook/cwd New Newtty Del Filter
 |  ls
 |  big.txt  plain.txt  sub
 |
@@ -92,8 +92,8 @@
 |
 |
 == snap tokback grid=120x30 cursor=2,3
-|New Newcol Find Grep Help Tutor Dump NextColor Debug Kill
-|  /tmp/pardes-snap/ttylook/cwd New Del Filter                 /tmp/pardes-snap/ttylook/cwd New Del Filter
+|New Newcol Joincol Find Grep Help Changelog Tutor Dump NextColor Debug Kill
+|  /tmp/pardes-snap/ttylook/cwd New Newtty Del Filter          /tmp/pardes-snap/ttylook/cwd New Newtty Del Filter
 |  ls                                                          ls
 |  big.txt  plain.txt  sub                                     big.txt  plain.txt  sub
 |
@@ -108,7 +108,7 @@
 |
 |
 |
-|  /tmp/pardes-snap/ttylook/cwd New Del Filter
+|  /tmp/pardes-snap/ttylook/cwd New Newtty Del Filter
 |  ls
 |  big.txt  plain.txt  sub
 |
@@ -123,8 +123,8 @@
 |
 |
 == snap insert grid=120x30 cursor=4,3
-|New Newcol Find Grep Help Tutor Dump NextColor Debug Kill
-|  /tmp/pardes-snap/ttylook/cwd New Del Filter                 /tmp/pardes-snap/ttylook/cwd New Del Filter
+|New Newcol Joincol Find Grep Help Changelog Tutor Dump NextColor Debug Kill
+|  /tmp/pardes-snap/ttylook/cwd New Newtty Del Filter          /tmp/pardes-snap/ttylook/cwd New Newtty Del Filter
 |  ls                                                          ls
 |  nnbig.txt  plain.txt  sub                                   big.txt  plain.txt  sub
 |
@@ -139,7 +139,7 @@
 |
 |
 |
-|  /tmp/pardes-snap/ttylook/cwd New Del Filter
+|  /tmp/pardes-snap/ttylook/cwd New Newtty Del Filter
 |  ls
 |  big.txt  plain.txt  sub
 |
@@ -154,8 +154,8 @@
 |
 |
 == snap tok3 grid=120x30 cursor=22,3
-|New Newcol Find Grep Help Tutor Dump NextColor Debug Kill
-|  /tmp/pardes-snap/ttylook/cwd New Del Filter                 /tmp/pardes-snap/ttylook/cwd New Del Filter
+|New Newcol Joincol Find Grep Help Changelog Tutor Dump NextColor Debug Kill
+|  /tmp/pardes-snap/ttylook/cwd New Newtty Del Filter          /tmp/pardes-snap/ttylook/cwd New Newtty Del Filter
 |  ls                                                          ls
 |  big.txt  plain.txt  sub                                     big.txt  plain.txt  sub
 |
@@ -170,7 +170,7 @@
 |
 |
 |
-|  /tmp/pardes-snap/ttylook/cwd New Del Filter
+|  /tmp/pardes-snap/ttylook/cwd New Newtty Del Filter
 |  ls
 |  big.txt  plain.txt  sub
 |
@@ -185,12 +185,12 @@
 |
 |
 == snap diropen grid=120x30 cursor=4,7
-|New Newcol Find Grep Help Tutor Dump NextColor Debug Kill
-|  /tmp/pardes-snap/ttylook/cwd     New Del Filter             /tmp/pardes-snap/ttylook/cwd New Del Filter
+|New Newcol Joincol Find Grep Help Changelog Tutor Dump NextColor Debug Kill
+|  /tmp/pardes-snap/ttylook/cwd     New Newtty Del Filter      /tmp/pardes-snap/ttylook/cwd New Newtty Del Filter
 |  ls                                                          ls
 |  big.txt  plain.txt  sub                                     big.txt  plain.txt  sub
 |
-|  /tmp/pardes-snap/ttylook/cwd/sub New Del Filter
+|  /tmp/pardes-snap/ttylook/cwd/sub New Newtty Del Filter
 |  ls
 |
 |
@@ -201,7 +201,7 @@
 |
 |
 |
-|  /tmp/pardes-snap/ttylook/cwd     New Del Filter
+|  /tmp/pardes-snap/ttylook/cwd     New Newtty Del Filter
 |  ls
 |  big.txt  plain.txt  sub
 |
@@ -216,12 +216,12 @@
 |
 |
 == snap noop grid=120x30 cursor=2,3
-|New Newcol Find Grep Help Tutor Dump NextColor Debug Kill
-|  /tmp/pardes-snap/ttylook/cwd     New Del Filter             /tmp/pardes-snap/ttylook/cwd New Del Filter
+|New Newcol Joincol Find Grep Help Changelog Tutor Dump NextColor Debug Kill
+|  /tmp/pardes-snap/ttylook/cwd     New Newtty Del Filter      /tmp/pardes-snap/ttylook/cwd New Newtty Del Filter
 |  ls                                                          ls
 |  big.txt  plain.txt  sub                                     big.txt  plain.txt  sub
 |
-|  /tmp/pardes-snap/ttylook/cwd/sub New Del Filter
+|  /tmp/pardes-snap/ttylook/cwd/sub New Newtty Del Filter
 |  ls
 |
 |
@@ -232,7 +232,7 @@
 |
 |
 |
-|  /tmp/pardes-snap/ttylook/cwd     New Del Filter
+|  /tmp/pardes-snap/ttylook/cwd     New Newtty Del Filter
 |  ls
 |  big.txt  plain.txt  sub
 |
@@ -247,33 +247,33 @@
 |
 |
 == snap fileopen grid=120x30 cursor=7,2
-|New Newcol Find Grep Help Tutor Dump NextColor Debug Kill
-|  /tmp/pardes-snap/ttylook/cwd  /tmp/pardes-snap/ttylook/cwd  /tmp/pardes-snap/ttylook/cwd New Del Filter
-|     1 line 1                   ls                            ls
-|     2 line 2                   big.txt  plain.txt  sub       big.txt  plain.txt  sub
-|     3 line 3
-|     4 line 4                   /tmp/pardes-snap/ttylook/cwd
-|     5 line 5                   ls
-|     6 line 6
-|     7 line 7
-|     8 line 8
-|     9 line 9
-|    10 line 10
-|    11 line 11
-|    12 line 12
-|    13 line 13
-|    14 line 14
-|    15 line 15                  /tmp/pardes-snap/ttylook/cwd
-|    16 line 16                  ls
-|    17 line 17                  big.txt  plain.txt  sub
-|    18 line 18
-|    19 line 19
-|    20 line 20
-|    21 line 21
-|    22 line 22
-|    23 line 23
-|    24 line 24
-|    25 line 25
-|    26 line 26
-|    27 line 27
-|    28 line 28
+|New Newcol Joincol Find Grep Help Changelog Tutor Dump NextColor Debug Kill
+|  /tmp/pardes-snap/ttylook/cwd/big.txt Save New Newtty Del    /tmp/pardes-snap/ttylook/cwd New Newtty Del Filter
+|     1 line 1                                                 ls
+|  /tmp/pardes-snap/ttylook/cwd       New Newtty Del Filter    big.txt  plain.txt  sub
+|
+|  /tmp/pardes-snap/ttylook/cwd/sub   New Newtty Del Filter
+|  ls
+|
+|
+|
+|
+|
+|
+|
+|
+|
+|  /tmp/pardes-snap/ttylook/cwd       New Newtty Del Filter
+|  ls
+|  big.txt  plain.txt  sub
+|
+|
+|
+|
+|
+|
+|
+|
+|
+|
+|