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/html_08.dump b/runtime/syntax/testdir/dumps/html_08.dump
index 02a68e7..dbae33a 100644
--- a/runtime/syntax/testdir/dumps/html_08.dump
+++ b/runtime/syntax/testdir/dumps/html_08.dump
@@ -1,9 +1,11 @@
-|<+0#00e0e07#ffffff0|n+0#af5f00255&|o|f|r|a|m|e|s|>+0#00e0e07&|<|/|n+0#af5f00255&|o|f|r|a|m|e|s|>+0#00e0e07&| +0#0000000&@53
+|<+0#00e0e07#ffffff0|m+0#af5f00255&|e|n|u|i|t|e|m|>+0#00e0e07&|<|/|m+0#af5f00255&|e|n|u|i|t|e|m|>+0#00e0e07&| +0#0000000&@53
+|<+0#00e0e07&|n+0#af5f00255&|o|b|r|>+0#00e0e07&|<|/|n+0#af5f00255&|o|b|r|>+0#00e0e07&| +0#0000000&@61
+|<+0#00e0e07&|n+0#af5f00255&|o|f|r|a|m|e|s|>+0#00e0e07&|<|/|n+0#af5f00255&|o|f|r|a|m|e|s|>+0#00e0e07&| +0#0000000&@53
|<+0#00e0e07&|p+0#af5f00255&|a|r|a|m|>+0#00e0e07&| +0#0000000&@67
|<+0#00e0e07&|r+0#af5f00255&|b|>+0#00e0e07&|<|/|r+0#af5f00255&|b|>+0#00e0e07&| +0#0000000&@65
-|<+0#00e0e07&|r+0#af5f00255&|t|c|>+0#00e0e07&|<|/|r+0#af5f00255&|t|c|>+0#00e0e07&| +0#0000000&@63
+><+0#00e0e07&|r+0#af5f00255&|t|c|>+0#00e0e07&|<|/|r+0#af5f00255&|t|c|>+0#00e0e07&| +0#0000000&@63
|<+0#00e0e07&|s+0#af5f00255&|t|r|i|k|e|>+0#00e0e07&|s+0#0000000&|t|r|i|k|e|t|h|r|o|u|g|h|<+0#00e0e07&|/|s+0#af5f00255&|t|r|i|k|e|>+0#00e0e07&| +0#0000000&@44
-><+0#00e0e07&|t+0#af5f00255&@1|>+0#00e0e07&|<|/|t+0#af5f00255&@1|>+0#00e0e07&| +0#0000000&@65
+|<+0#00e0e07&|t+0#af5f00255&@1|>+0#00e0e07&|<|/|t+0#af5f00255&@1|>+0#00e0e07&| +0#0000000&@65
@75
|<+0#0000e05&|!|-@1| |E|x|p|e|r|i|m|e|n|t|a|l| |-| |n|o|t| |h|i|g|h|l|i|g|h|t|e|d| |-@1|>| +0#0000000&@35
|<+0#00e0e07&|p+0#0000000&|o|r|t|a|l|>+0#00e0e07&|<|/|p+0#0000000&|o|r|t|a|l|>+0#00e0e07&| +0#0000000&@57
@@ -15,6 +17,4 @@
|~+0#4040ff13&| @73
|~| @73
|~| @73
-|~| @73
-|~| @73
-| +0#0000000&@56|1|4|5|,|1| @8|B|o|t|
+| +0#0000000&@56|1|4|3|,|1| @8|B|o|t|