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text: copy leading quote characters when automatic hard-wrapping occurs

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When the user is typing a long text and --breaklonglines is in effect,
then any leading comment or quoting characters are automatically added
to each automatic new line.

This fulfills https://savannah.gnu.org/bugs/?56042.
Requested-by: Sébastien Desreux <seb@h-k.fr>
This commit is contained in:
Benno Schulenberg 2019-04-26 10:37:04 +02:00
parent 4314b8ded3
commit 8fce33afe0
2 changed files with 41 additions and 3 deletions
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1
src/proto.h
View File

@ -533,6 +533,7 @@ ssize_t break_line(const char *line, ssize_t goal, bool snap_at_nl);
size_t indent_length(const char *line);
#endif
#ifdef ENABLE_JUSTIFY
size_t quote_length(const char *line);
bool begpar(const linestruct *const foo, int depth);
bool inpar(const linestruct *const foo);
void do_justify(bool full_justify);

43
src/text.c
View File

@ -1426,6 +1426,13 @@ bool do_wrap(void)
add_undo(SPLIT_BEGIN);
#endif
#ifdef ENABLE_JUSTIFY
bool autowhite = ISSET(AUTOINDENT);
size_t lead_len = quote_length(line->data);
if (lead_len > 0)
UNSET(AUTOINDENT);
#endif
/* The remainder is the text that will be wrapped to the next line. */
remainder = line->data + wrap_loc;
@ -1455,10 +1462,19 @@ bool do_wrap(void)
#endif
}
/* Join the next line to this one, and delete any extra blanks. */
do {
/* Join the next line to this one. */
do_delete();
#ifdef ENABLE_JUSTIFY
/* If the quoting part of the current line equals the quoting part of
* what was the next line, then strip this second quoting part. */
if (strncmp(line->data, line->data + openfile->current_x, lead_len) == 0)
for (size_t i = lead_len; i > 0; i--)
do_delete();
#endif
/* Remove any extra blanks. */
while (is_blank_mbchar(&line->data[openfile->current_x]))
do_delete();
} while (is_blank_mbchar(&line->data[openfile->current_x]));
}
/* Go to the wrap location. */
@ -1480,6 +1496,27 @@ bool do_wrap(void)
/* Now split the line. */
do_enter();
#ifdef ENABLE_JUSTIFY
/* If the original line has quoting, copy it to the spillage line. */
if (lead_len > 0) {
lead_len += indent_length(line->data + lead_len);
line = line->next;
line_len = strlen(line->data);
line->data = charealloc(line->data, lead_len + line_len + 1);
charmove(line->data + lead_len, line->data, line_len + 1);
strncpy(line->data, line->prev->data, lead_len);
openfile->current_x += lead_len;
#ifndef NANO_TINY
update_undo(ENTER);
#endif
if (autowhite)
SET(AUTOINDENT);
}
#endif
openfile->spillage_line = openfile->current;
if (cursor_x < wrap_loc) {