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memline: do not attempt to cache line2byte()

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This is irrelevant to neovim usecases anyway.
This commit is contained in:
Björn Linse
2020-09-09 16:50:53 +02:00
parent f239134fee
commit ef5e7b862d
2 changed files with 8 additions and 2 deletions
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9
src/nvim/memline.c
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@@ -4012,8 +4012,13 @@ long ml_find_line_or_offset(buf_T *buf, linenr_T lnum, long *offp, bool no_ff)
// This is used by the extmark code which needs the byte offset of the edited
// line. So when doing multiple small edits on the same line the value is
// only calculated once.
//
// NB: caching doesn't work with 'fileformat'. This is not a problem for
// bytetracking, as bytetracking ignores 'fileformat' option. But calling
// line2byte() will invalidate the cache for the time being (this function
// was never cached to start with anyway).
bool can_cache = (lnum != 0 && !ffdos && buf->b_ml.ml_line_lnum == lnum);
if (lnum == 0 || buf->b_ml.ml_line_lnum < lnum) {
if (lnum == 0 || buf->b_ml.ml_line_lnum < lnum || !no_ff) {
ml_flush_line(curbuf);
} else if (can_cache && buf->b_ml.ml_line_offset > 0) {
return buf->b_ml.ml_line_offset;
@@ -4113,7 +4118,7 @@ long ml_find_line_or_offset(buf_T *buf, linenr_T lnum, long *offp, bool no_ff)
}
}
if (can_cache) {
if (can_cache && size > 0) {
buf->b_ml.ml_line_offset = size;
}