runtime(syntax-tests): Allow for folded and wrapped lines in syntax test files
The current implementation falls short for syntax test files
on two accounts:
1. With folded lines -- some lines before folded lines are
unnecessarily repeated in generated dump files because
closed folded lines are always treated as opened for the
cursor to move _in_ instead of to move _over_ them.
2. With wrapped lines (longer than 75 columns) -- some lines
are omitted in generated dump files because calculations
for the cursor progress and its movement commands only
refer to file lines and not their layout within a 20x75
buffer (less &cmdheight).
As an alternative, we abandon deterministic (and inaccurate
at times) calculations for the cursor progress and, instead,
advance the cursor by as much as before for a single dump
file, but now rely on marking the last visible line and
additional movement to position lines at desired offsets,
carefully preserving compatibility for the &scrolloff and
&ruler values inherited from defaults.vim. The parent Vim
process will keep track of progress through a syntax test
file made by its child process ("terminal") by reading the
rightmost end of the ruler line from the terminal buffer,
looking for " All " or " Bot " for its cue to finish dump
file generation.
With these changes applied, the lossless line length limit
will be raised from 75 to 1425 (for a 19x75 view) columns.
Also, prefer "lastline" to "truncate" for &display; hiding
the content of any last _long_ line in a view goes against
the purpose of syntax file testing -- all lines should be
recorded.
related: #15150
fixes: #14245
Signed-off-by: Aliaksei Budavei <0x000c70@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/syntax/testdir/dumps/c_05.dump b/runtime/syntax/testdir/dumps/c_05.dump
index 6871cd0..4d26c2e 100644
--- a/runtime/syntax/testdir/dumps/c_05.dump
+++ b/runtime/syntax/testdir/dumps/c_05.dump
@@ -1,9 +1,11 @@
-|s+0#00e0003#ffffff0|t|a|t|i|c| +0#0000000&|c|h|a|r|_|u| |*|s|t|a|r|t|_|d|i|r| |=| |N+0#e000002&|U|L@1|;+0#0000000&| @7|/+0#0000e05&@1| |c|u|r@1|e|n|t| |w|o|r|k|i|n|g| |d|i|r| |o|n| |s|t|a|r|t|u|p| +0#0000000&@1
+|#+0#e000e06#ffffff0|i|f|n|d|e|f| |N|O|_|V|I|M|_|M|A|I|N| @4|/+0#0000e05&@1| |s|k|i|p| |t|h|i|s| |f|o|r| |u|n|i|t@1|e|s|t|s| +0#0000000&@24
+@75
+|s+0#00e0003&|t|a|t|i|c| +0#0000000&|c|h|a|r|_|u| |*|s|t|a|r|t|_|d|i|r| |=| |N+0#e000002&|U|L@1|;+0#0000000&| @7|/+0#0000e05&@1| |c|u|r@1|e|n|t| |w|o|r|k|i|n|g| |d|i|r| |o|n| |s|t|a|r|t|u|p| +0#0000000&@1
@75
|s+0#00e0003&|t|a|t|i|c| +0#0000000&|i+0#00e0003&|n|t| +0#0000000&|h|a|s|_|d|a|s|h|_|c|_|a|r|g| |=| |F|A|L|S|E|;| @40
-@75
+> @74
|#+0#e000e06&| |i|f|d|e|f| |V|I|M|D|L@1| +0#0000000&@60
->_@1|d|e|c|l|s|p|e|c|(|d|l@1|e|x|p|o|r|t|)| @53
+|_@1|d|e|c|l|s|p|e|c|(|d|l@1|e|x|p|o|r|t|)| @53
|#+0#e000e06&| |e|n|d|i|f| +0#0000000&@67
@4|i+0#00e0003&|n|t| +0#0000000&@67
|#+0#e000e06&| |i|f|d|e|f| |M|S|W|I|N| +0#0000000&@61
@@ -15,6 +17,4 @@
|{| @73
|#+0#e000e06&|i|f| |d|e|f|i|n|e|d|(|S|T|A|R|T|U|P|T|I|M|E|)| ||@1| |d|e|f|i|n|e|d|(|C|L|E|A|N|_|R|U|N|T|I|M|E|P|A|T|H|)| +0#0000000&@20
@4|i+0#00e0003&|n|t| +0#0000000&@8|i|;| @56
-|#+0#e000e06&|e|n|d|i|f| +0#0000000&@68
-@75
-@57|9|1|,|1| @9|8|1|%|
+@57|8|9|,|0|-|1| @7|7|9|%|