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Fix completion pager rendering when there are lines after cursor

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When the completion pager fills up all lines of the screen, we subtract
from the pager size the number of lines occupied by the prompt +
command line buffer (typically 1), so the command line is always
visible.  However, we only subtract the number of lines *before* the
cursor, so on some multiline commandlines we draw a pager that is
too large for our screen, clobbering the commandline rendering.
Fix this by counting all lines.

Fixes #8509
Possibly fixes #8405
This commit is contained in:
Johannes Altmanninger
2021-12-02 04:40:55 +01:00
parent 667bedad3d
commit 0cd3ed4b84
2 changed files with 13 additions and 1 deletions
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11
tests/checks/tmux-complete.fish
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@@ -28,3 +28,14 @@ isolated-tmux capture-pane -p
# The "bc" part is the autosuggestion - we could use "capture-pane -e" to check colors.
# CHECK: prompt 2> foo2 aabc
# CHECK: aabc aaBd
# Check that a larger-than-screen completion list does not stomp a multiline commandline (#8509).
isolated-tmux send-keys C-u 'complete -c foo3 -fa "(seq $LINES)\t(string repeat -n $COLUMNS d)"' Enter \
C-l begin Enter foo3 Enter "echo some trailing line" \
C-p C-e Space Tab Tab
tmux-sleep
isolated-tmux capture-pane -p | sed -n '1p;$p'
# Assert that we didn't change the command line.
# CHECK: prompt 3> begin
# Also ensure that the pager is actually fully disclosed.
# CHECK: rows 1 to 6 of 10