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vi: avoid touching a new file with ZZ when no editing has been done

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This is the behaviour observed with standard vim and busybox vi of at
least 1.22.1.  It was changed with commit "32afd3a vi: some
simplifications" which happened before 1.23.0.

Mistyping filename on command line happens fairly often and it's better
we restore the old behaviour to avoid a few unnecessary flash writes and
sometimes efforts of debugging bugs caused by those unneeded stray
files.

Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Yousong Zhou 2017-03-24 21:13:10 +01:00 committed by Denys Vlasenko
parent e3b65ab43d
commit 8f3bf4f0d3
1 changed files with 8 additions and 8 deletions
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16
editors/vi.c
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@ -715,14 +715,6 @@ static int init_text_buffer(char *fn)
{
int rc;
flush_undo_data();
modified_count = 0;
last_modified_count = -1;
#if ENABLE_FEATURE_VI_YANKMARK
/* init the marks */
memset(mark, 0, sizeof(mark));
#endif
/* allocate/reallocate text buffer */
free(text);
text_size = 10240;
@ -737,6 +729,14 @@ static int init_text_buffer(char *fn)
// file doesnt exist. Start empty buf with dummy line
char_insert(text, '\n', NO_UNDO);
}
flush_undo_data();
modified_count = 0;
last_modified_count = -1;
#if ENABLE_FEATURE_VI_YANKMARK
/* init the marks */
memset(mark, 0, sizeof(mark));
#endif
return rc;
}