I've got a plugin that registers an autocmd on TextChanged and uses the '[ and
'] marks to act on the modified lines (trim trailing whitespace). There's a
weird edge case that happens if you open a file and immediately save it. The
save triggers TextChanged, and '[,'] defaults to 1,$. Here's a simple repro
using a recently-built vim at 7.4.473:
$ cat > foo
foo
bar
baz
^D
$ vim -N -u NONE foo
:autocmd TextChanged * echomsg(line("'[") . "," . line("']"))
:w
And notice that "1,3" is printed in the status line.
I can understand why '[,'] defaults to 1,$, but why does save trigger
TextChanged?
-Bob
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