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Fix newline substitution.

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Problem  : Command `s/\n//` is being translated into a call to do_join
           with a count of 1. But do_join asserts its precondition count
           >= 2, which is causing the program to abort.
Note     : This in fact revealed bigger problems: generated join command
           line count, as well as reported substitutions/lines were
           wrong in several cases, since patch 7.4.232.
           See:
           [patch] http://markmail.org/message/vo7ruair5raccawp
           [issue] https://code.google.com/p/vim/issues/detail?id=287
Solution : - Don't generate join command for single-line-range case.
           - Make generated join command include:
             * lines in range + 1, when range doesn't end at last line.
             * lines in range, when range ends at last line.
           - Make reported substitutions/lines always be
             number-of-lines-joined - 1.
This commit is contained in:
Eliseo Martínez
2014-11-24 12:35:21 +01:00
parent 68cee4c28d
commit 2072fd3058
1 changed files with 7 additions and 2 deletions
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9
src/nvim/ex_cmds.c
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@@ -3602,8 +3602,13 @@ void do_sub(exarg_T *eap)
eap->flags = EXFLAG_PRINT;
}
do_join(eap->line2 - eap->line1 + 1, FALSE, TRUE, FALSE, true);
sub_nlines = sub_nsubs = eap->line2 - eap->line1 + 1;
linenr_T joined_lines_count = eap->line2 < curbuf->b_ml.ml_line_count
? eap->line2 - eap->line1 + 2
: eap->line2 - eap->line1 + 1;
if (joined_lines_count >= 2) {
do_join(joined_lines_count, FALSE, TRUE, FALSE, true);
}
sub_nlines = sub_nsubs = joined_lines_count - 1;
do_sub_msg(false);
ex_may_print(eap);