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justify: when appropriate, move end point of marked region forward 

So that also the line after the newly made paragraph gets the
leading part that belongs to the start of a new paragraph.

This https://savannah.gnu.org/bugs/?57974.

Bug existed since version 4.0, since the justifying
of a marked region was introduced.
This commit is contained in:
Benno Schulenberg 2020-03-09 12:07:06 +01:00
parent 5310a355ef
commit 3225c71ecd
1 changed files with 10 additions and 18 deletions
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28
src/text.c
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@ -1751,7 +1751,7 @@ void do_justify(bool full_justify)
/* If the mark is on, do as Pico: treat all marked text as one paragraph. */
if (openfile->mark) {
size_t quote_len;
size_t quote_len, fore_length;
get_region((const linestruct **)&startline, &start_x,
(const linestruct **)&endline, &end_x, &right_side_up);
@ -1793,9 +1793,12 @@ void do_justify(bool full_justify)
the_second_lead[second_lead_len] = '\0';
}
/* Advance over any subsequent whitespace. */
while (is_blank_mbchar(&endline->data[end_x]))
end_x++;
quote_len = quote_length(endline->data);
fore_length = quote_len + indent_length(endline->data + quote_len);
/* When the region ends IN the lead, take the whole lead. */
if (end_x < fore_length)
end_x = fore_length;
/* Include preceding and subsequent whitespace into the marked region. */
openfile->mark = startline;
@ -1860,7 +1863,6 @@ void do_justify(bool full_justify)
if (openfile->mark) {
size_t line_len = strlen(cutbuffer->data);
size_t white_len = indent_length(cutbuffer->data);
size_t needed_bot_extra = (end_x < lead_len ? lead_len - end_x : 0);
linestruct *line;
/* Trim any whitespace at the start of the extracted region. */
@ -1879,13 +1881,6 @@ void do_justify(bool full_justify)
strncpy(cutbuffer->data, the_lead, lead_len);
}
/* If the marked region ends in the middle of a line, and this line
* has a leading part, check if the last line of the extracted region
* contains a missing portion of this leading part. If it has no
* missing portion, we don't need to append anything below. */
if (strncmp(cutbottom->data, the_lead, lead_len - needed_bot_extra) != 0)
needed_bot_extra = 0;
/* Now justify the extracted region. */
concat_paragraph(&cutbuffer, linecount);
squeeze(cutbuffer, lead_len);
@ -1905,14 +1900,11 @@ void do_justify(bool full_justify)
cutbuffer = cutbuffer->prev;
}
/* If the marked region ended in the middle of a line, insert a new
* line after the new paragraph. If the region ended in the middle
* of a line's leading part, make the new line start with the missing
* portion, so it will become a full leading part when the justified
* region is "pasted" back. */
/* If the marked region ended in the middle of a line,
* insert a newline after the new paragraph. */
if (end_x > 0 && before_eol) {
line->next = make_new_node(line);
line->next->data = copy_of(the_lead + needed_bot_extra);
line->next->data = copy_of(the_lead);
}
free(the_lead);