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revert: "vim-patch:9.1.0055: formatting long lines is slow"

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Revert "vim-patch:9.1.0055: formatting long lines is slow (#27199)"

This reverts commit 89a9745a1a.

Fix #28197
This commit is contained in:
zeertzjq
2024-04-06 12:04:24 +08:00
committed by GitHub
parent ae28ef327e
commit f4df49a959
1 changed files with 5 additions and 18 deletions
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23
src/nvim/textformat.c
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@@ -105,14 +105,9 @@ void internal_format(int textwidth, int second_indent, int flags, bool format_on
colnr_T col; colnr_T col;
bool did_do_comment = false; bool did_do_comment = false;
// Cursor is currently at the end of line. No need to format colnr_T virtcol = get_nolist_virtcol() + char2cells(c != NUL ? c : gchar_cursor());
// if line length is less than textwidth (8 * textwidth for if (virtcol <= (colnr_T)textwidth) {
// utf safety) break;
if (curwin->w_cursor.col < 8 * textwidth) {
colnr_T virtcol = get_nolist_virtcol() + char2cells(c != NUL ? c : gchar_cursor());
if (virtcol <= (colnr_T)textwidth) {
break;
}
} }
if (no_leader) { if (no_leader) {
@@ -160,16 +155,9 @@ void internal_format(int textwidth, int second_indent, int flags, bool format_on
coladvance(curwin, (colnr_T)textwidth); coladvance(curwin, (colnr_T)textwidth);
wantcol = curwin->w_cursor.col; wantcol = curwin->w_cursor.col;
// If startcol is large (a long line), formatting takes too much curwin->w_cursor.col = startcol;
// time. The algorithm is O(n^2), it walks from the end of the
// line to textwidth border every time for each line break.
//
// Ceil to 8 * textwidth to optimize.
curwin->w_cursor.col = startcol < 8 * textwidth ? startcol : 8 * textwidth;
foundcol = 0; foundcol = 0;
int skip_pos = 0; int skip_pos = 0;
bool first_pass = true;
// Find position to break at. // Find position to break at.
// Stop at first entered white when 'formatoptions' has 'v' // Stop at first entered white when 'formatoptions' has 'v'
@@ -177,9 +165,8 @@ void internal_format(int textwidth, int second_indent, int flags, bool format_on
|| (flags & INSCHAR_FORMAT) || (flags & INSCHAR_FORMAT)
|| curwin->w_cursor.lnum != Insstart.lnum || curwin->w_cursor.lnum != Insstart.lnum
|| curwin->w_cursor.col >= Insstart.col) { || curwin->w_cursor.col >= Insstart.col) {
if (first_pass && c != NUL) { if (curwin->w_cursor.col == startcol && c != NUL) {
cc = c; cc = c;
first_pass = false;
} else { } else {
cc = gchar_cursor(); cc = gchar_cursor();
} }