mirrors/nano
1
0
Fork 0
mirror of git://git.sv.gnu.org/nano.git synced 2024-11-22 12:51:23 +03:00
Code Issues Packages Projects Releases Wiki Activity

add DB's overhaul of the paragraph searching code and some of the

Browse Source 
justify code, as it makes some code much more understandable and fixes a
bug where searching for the previous paragraph would move the cursor too
high in one case


git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@1873 35c25a1d-7b9e-4130-9fde-d3aeb78583b8
This commit is contained in:
David Lawrence Ramsey 2004-07-30 03:54:34 +00:00
parent f56cc9e0e9
commit 819c7f0327
5 changed files with 239 additions and 244 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
ChangeLog
View File

@ -52,6 +52,14 @@ CVS code -
- Convert placewewant to a size_t, and convert some functions
that use it as a parameter to use size_t as well. (David
Benbennick and DLR)
- Overhaul the paragraph searching code and some of the justify
code to clarify it and fix a bug where searches from the
previous paragraph would move up too far. Also make
quotestr-related variables global so that they only have to be
compiled once, and remove the no-longer-needed IFREG() macro.
New functions begpar() and inpar(); changes to quote_length(),
quotes_match(), do_para_search(), do_para_begin(),
do_para_end(), and do_justify(). (David Benbennick)
- files.c:
close_open_file()
- Tweak to no longer rely on the return values of
@ -106,11 +114,13 @@ CVS code -
- nano.h:
- Reassign the key for full justification to Ctrl-U, for
compatibility with the current version of Pico. (DLR)
- Remove justbegend enum, as it's no longer needed. (DLR)
- proto.h:
- Change the variables in the prototypes for do_justify(),
get_verbatim_kbinput(), and get_mouseinput() to match the ones
used in the actual functions. (DLR)
- Remove unused declaration of temp_opt. (David Benbennick)
- Add missing copy_file() prototype. (David Benbennick)
- rcfile.c:
rcfile_msg()
- Removed along with the related static int errors, and replaced

11
src/global.c
View File

@ -80,6 +80,13 @@ char *brackets = NULL; /* Closing brackets that can follow
sentences. */
char *quotestr = NULL; /* Quote string. The default value is
set in main(). */
#ifdef HAVE_REGEX_H
regex_t quotereg; /* Compiled quotestr regular expression. */
int quoterc; /* Did it compile? */
char *quoteerr = NULL; /* The error message. */
#else
size_t quotelen; /* strlen(quotestr) */
#endif
#endif
#ifndef NANO_SMALL
@ -1073,6 +1080,10 @@ void thanks_for_all_the_fish(void)
#ifndef DISABLE_JUSTIFY
if (quotestr != NULL)
free(quotestr);
#ifdef HAVE_REGEX_H
regfree(&quotereg);
free(quoteerr);
#endif
#endif
#ifndef NANO_SMALL
if (backup_dir != NULL)

429
src/nano.c
View File

@ -1964,45 +1964,40 @@ void justify_format(filestruct *line, size_t skip)
*
* Note that if !HAVE_REGEX_H then we match concatenated copies of
* quotestr. */
#ifdef HAVE_REGEX_H
size_t quote_length(const char *line, const regex_t *qreg)
{
regmatch_t matches;
int rc = regexec(qreg, line, 1, &matches, 0);
if (rc == REG_NOMATCH || matches.rm_so == (regoff_t) -1)
return 0;
/* matches.rm_so should be 0, since the quote string should start with
* the caret ^. */
return matches.rm_eo;
}
#else /* !HAVE_REGEX_H */
size_t quote_length(const char *line)
{
#ifdef HAVE_REGEX_H
regmatch_t matches;
int rc = regexec(&quotereg, line, 1, &matches, 0);
if (rc == REG_NOMATCH || matches.rm_so == (regoff_t)-1)
return 0;
/* matches.rm_so should be 0, since the quote string should start
* with the caret ^. */
return matches.rm_eo;
#else /* !HAVE_REGEX_H */
size_t qdepth = 0;
size_t qlen = strlen(quotestr);
/* Compute quote depth level. */
while (!strcmp(line + qdepth, quotestr))
qdepth += qlen;
qdepth += quotelen;
return qdepth;
}
#endif /* !HAVE_REGEX_H */
}
/* a_line and b_line are lines of text. The quotation part of a_line is
* the first a_quote characters. Check that the quotation part of
* b_line is the same. */
int quotes_match(const char *a_line, size_t a_quote, IFREG(const char
*b_line, const regex_t *qreg))
int quotes_match(const char *a_line, size_t a_quote, const char *b_line)
{
/* Here is the assumption about a_quote: */
assert(a_quote == quote_length(IFREG(a_line, qreg)));
return a_quote == quote_length(IFREG(b_line, qreg)) &&
assert(a_quote == quote_length(a_line));
return a_quote == quote_length(b_line) &&
!strncmp(a_line, b_line, a_quote);
}
/* We assume a_line and b_line have no quote part. Then, we return whether
* b_line could follow a_line in a paragraph. */
/* We assume a_line and b_line have no quote part. Then, we return
* whether b_line could follow a_line in a paragraph. */
size_t indents_match(const char *a_line, size_t a_indent, const char
*b_line, size_t b_indent)
{
@ -2012,6 +2007,115 @@ size_t indents_match(const char *a_line, size_t a_indent, const char
return b_indent <= a_indent && !strncmp(a_line, b_line, b_indent);
}
/* Is foo the beginning of a paragraph?
*
* A line of text consists of a "quote part", followed by an
* "indentation part", followed by text. The functions quote_length()
* and indent_length() calculate these parts.
*
* A line is "part of a paragraph" if it has a part not in the quote
* part or the indentation.
*
* A line is "the beginning of a paragraph" if it is part of a
* paragraph and
* 1) it is the top line of the file, or
* 2) the line above it is not part of a paragraph, or
* 3) the line above it does not have precisely the same quote
* part, or
* 4) the indentation of this line is not an initial substring of
* the indentation of the previous line, or
* 5) this line has no quote part and some indentation, and
* AUTOINDENT is not set.
* The reason for number 5) is that if AUTOINDENT is not set, then an
* indented line is expected to start a paragraph, like in books.
* Thus, nano can justify an indented paragraph only if AUTOINDENT is
* turned on. */
bool begpar(const filestruct *const foo)
{
size_t quote_len;
size_t indent_len;
size_t temp_id_len;
/* Case 1). */
if (foo->prev == NULL)
return TRUE;
quote_len = quote_length(foo->data);
indent_len = indent_length(foo->data + quote_len);
/* Not part of a paragraph. */
if (foo->data[quote_len + indent_len] == '\0')
return FALSE;
/* Case 3). */
if (!quotes_match(foo->data, quote_len, foo->prev->data))
return TRUE;
temp_id_len = indent_length(foo->prev->data + quote_len);
/* Case 2) or 5) or 4). */
if (foo->prev->data[quote_len + temp_id_len] == '\0' ||
(quote_len == 0 && indent_len > 0
#ifndef NANO_SMALL
&& !ISSET(AUTOINDENT)
#endif
) || !indents_match(foo->prev->data + quote_len, temp_id_len,
foo->data + quote_len, indent_len))
return TRUE;
return FALSE;
}
/* We find the last beginning-of-paragraph line before the current
* line. */
void do_para_begin(void)
{
const filestruct *old_current = current;
const size_t old_pww = placewewant;
current_x = 0;
placewewant = 0;
if (current->prev != NULL) {
do {
current = current->prev;
} while (!begpar(current));
}
edit_redraw(old_current, old_pww);
}
bool inpar(const char *str)
{
size_t quote_len = quote_length(str);
return str[quote_len + indent_length(str + quote_len)] != '\0';
}
/* A line is the last line of a paragraph if it is in a paragraph, and
* the next line isn't, or is the beginning of a paragraph. We move
* down to the end of a paragraph, then one line farther. */
void do_para_end(void)
{
const filestruct *const old_current = current;
const size_t old_pww = placewewant;
current_x = 0;
placewewant = 0;
while (current->next != NULL && !inpar(current->data))
current = current->next;
while (current->next != NULL && inpar(current->next->data) &&
!begpar(current->next))
current = current->next;
if (current->next != NULL)
current = current->next;
edit_redraw(old_current, old_pww);
}
/* Put the next par_len lines, starting with first_line, in the cut
* buffer, not allowing them to be concatenated. We assume there are
* enough lines after first_line. We leave copies of the lines in
@ -2066,14 +2170,14 @@ int breakable(const char *line, int goal)
}
/* We are trying to break a chunk off line. We find the last space such
* that the display length to there is at most goal + 1. If there is
* no such space, and force is not 0, then we find the first space.
* that the display length to there is at most goal + 1. If there is no
* such space, and force is not 0, then we find the first space.
* Anyway, we then take the last space in that group of spaces. The
* terminating '\0' counts as a space. */
int break_line(const char *line, int goal, int force)
{
/* Note that we use int instead of size_t, since goal is at most COLS,
* the screen width, which will always be reasonably small. */
/* Note that we use int instead of size_t, since goal is at most
* COLS, the screen width, which will always be reasonably small. */
int space_loc = -1;
/* Current tentative return value. Index of the last space we
* found with short enough display width. */
@ -2110,50 +2214,16 @@ int break_line(const char *line, int goal, int force)
return space_loc;
}
/* Search a paragraph. If search_type is JUSTIFY, search for the
* beginning of the current paragraph or, if we're at the end of it, the
* beginning of the next paragraph. If search_type is BEGIN, search for
* the beginning of the current paragraph or, if we're already there,
* the beginning of the previous paragraph. If search_type is END,
* search for the end of the current paragraph or, if we're already
* there, the end of the next paragraph. Afterwards, save the quote
* length, paragraph length, and indentation length in *quote, *par, and
* *indent if they aren't NULL, and refresh the screen if do_refresh is
* TRUE. Return 0 if we found a paragraph, or 1 if there was an error
* or we didn't find a paragraph.
/* Find the beginning of the current paragraph if we're in one, or the
* beginning of the next paragraph if we're not. Afterwards, save the
* quote length and paragraph length in *quote and *par. Return FALSE
* if we found a paragraph, or TRUE if there was an error or we didn't
* find a paragraph.
*
* To explain the searching algorithm, I first need to define some
* phrases about paragraphs and quotation:
* A line of text consists of a "quote part", followed by an
* "indentation part", followed by text. The functions quote_length()
* and indent_length() calculate these parts.
*
* A line is "part of a paragraph" if it has a part not in the quote
* part or the indentation.
*
* A line is "the beginning of a paragraph" if it is part of a
* paragraph and
* 1) it is the top line of the file, or
* 2) the line above it is not part of a paragraph, or
* 3) the line above it does not have precisely the same quote
* part, or
* 4) the indentation of this line is not an initial substring of
* the indentation of the previous line, or
* 5) this line has no quote part and some indentation, and
* AUTOINDENT is not set.
* The reason for number 5) is that if AUTOINDENT is not set, then an
* indented line is expected to start a paragraph, like in books.
* Thus, nano can justify an indented paragraph only if AUTOINDENT is
* turned on.
*
* A contiguous set of lines is a "paragraph" if each line is part of
* a paragraph and only the first line is the beginning of a
* paragraph. */
int do_para_search(justbegend search_type, size_t *quote, size_t *par,
size_t *indent, int do_refresh)
* See the comment at begpar() for more about when a line is the
* beginning of a paragraph. */
bool do_para_search(size_t *const quote, size_t *const par)
{
size_t old_pww = placewewant;
const filestruct *current_save = current;
size_t quote_len;
/* Length of the initial quotation of the paragraph we
* search. */
@ -2165,18 +2235,9 @@ int do_para_search(justbegend search_type, size_t *quote, size_t *par,
/* Generic line of text. */
#ifdef HAVE_REGEX_H
regex_t qreg; /* qreg is the compiled quotation regexp. We no
* longer care about quotestr. */
int rc = regcomp(&qreg, quotestr, REG_EXTENDED);
if (rc != 0) {
size_t size = regerror(rc, &qreg, NULL, 0);
char *strerror = charalloc(size);
regerror(rc, &qreg, strerror, size);
statusbar(_("Bad quote string %s: %s"), quotestr, strerror);
free(strerror);
return 1;
if (quoterc != 0) {
statusbar(_("Bad quote string %s: %s"), quotestr, quoteerr);
return TRUE;
}
#endif
@ -2185,20 +2246,19 @@ int do_para_search(justbegend search_type, size_t *quote, size_t *par,
current_x = 0;
quote_len = quote_length(IFREG(current->data, &qreg));
quote_len = quote_length(current->data);
indent_len = indent_length(current->data + quote_len);
/* Here we find the last or first line of the paragraph to search.
* If the current line is in a paragraph, then we move back to the
* first line of the paragraph. Otherwise, we move to the last or
* first line that is in a paragraph. */
start_para_search:
/* Here we find the first line of the paragraph to search. If the
* current line is in a paragraph, then we move back to the first
* line of the paragraph. Otherwise, we move to the first line that
* is in a paragraph. */
if (current->data[quote_len + indent_len] != '\0') {
/* This line is part of a paragraph. So we must search back to
* the first line of this paragraph. First we check items 1)
* and 3) above. */
while (current->prev != NULL && quotes_match(current->data,
quote_len, IFREG(current->prev->data, &qreg))) {
while (current->prev != NULL && quotes_match(current->data,
quote_len, current->prev->data)) {
size_t temp_id_len =
indent_length(current->prev->data + quote_len);
/* The indentation length of the previous line. */
@ -2217,37 +2277,6 @@ int do_para_search(justbegend search_type, size_t *quote, size_t *par,
current = current->prev;
current_y--;
}
/* If we're searching for the beginning of the paragraph,
* we're not on the first line of the file, and we're on the
* same line we started on, move up one line and search
* again, so that we end up on the first line of the previous
* paragraph. */
if (search_type == BEGIN && current->prev != NULL &&
current == current_save) {
current = current->prev;
current_y--;
goto start_para_search;
}
} else if (search_type == BEGIN) {
/* This line is not part of a paragraph. Move up until we get
* to a non "blank" line. */
do {
/* There is no previous paragraph, so nothing to move to. */
if (current->prev == NULL) {
placewewant = 0;
if (do_refresh)
edit_redraw(current_save, old_pww);
#ifdef HAVE_REGEX_H
regfree(&qreg);
#endif
return 1;
}
current = current->prev;
current_y--;
quote_len = quote_length(IFREG(current->data, &qreg));
indent_len = indent_length(current->data + quote_len);
} while (current->data[quote_len + indent_len] == '\0');
} else {
/* This line is not part of a paragraph. Move down until we get
* to a non "blank" line. */
@ -2255,23 +2284,17 @@ int do_para_search(justbegend search_type, size_t *quote, size_t *par,
/* There is no next paragraph, so nothing to move to. */
if (current->next == NULL) {
placewewant = 0;
if (do_refresh)
edit_redraw(current_save, old_pww);
#ifdef HAVE_REGEX_H
regfree(&qreg);
#endif
return 1;
return TRUE;
}
current = current->next;
current_y++;
quote_len = quote_length(IFREG(current->data, &qreg));
quote_len = quote_length(current->data);
indent_len = indent_length(current->data + quote_len);
} while (current->data[quote_len + indent_len] == '\0');
}
/* Now current is the last line in the paragraph if we're searching
* for the beginning of it or the first line of the paragraph
* otherwise, and quote_len is the quotation length of that line. */
/* Now current is the first line of the paragraph, and quote_len is
* the quotation length of that line. */
/* Next step, compute par_len, the number of lines in this
* paragraph. */
@ -2279,32 +2302,11 @@ int do_para_search(justbegend search_type, size_t *quote, size_t *par,
par_len = 1;
indent_len = indent_length(line->data + quote_len);
if (search_type == BEGIN) {
while (line->prev != NULL && quotes_match(current->data,
quote_len, IFREG(line->prev->data, &qreg))) {
size_t temp_id_len = indent_length(line->prev->data +
quote_len);
while (line->next != NULL &&
quotes_match(current->data, quote_len, line->next->data)) {
size_t temp_id_len = indent_length(line->next->data + quote_len);
if (!indents_match(line->data + quote_len, indent_len,
line->prev->data + quote_len, temp_id_len) ||
line->prev->data[quote_len + temp_id_len] == '\0' ||
(quote_len == 0 && temp_id_len > 0
#ifndef NANO_SMALL
&& !ISSET(AUTOINDENT)
#endif
))
break;
indent_len = temp_id_len;
line = line->prev;
par_len++;
}
} else {
while (line->next != NULL && quotes_match(current->data,
quote_len, IFREG(line->next->data, &qreg))) {
size_t temp_id_len = indent_length(line->next->data +
quote_len);
if (!indents_match(line->data + quote_len, indent_len,
if (!indents_match(line->data + quote_len, indent_len,
line->next->data + quote_len, temp_id_len) ||
line->next->data[quote_len + temp_id_len] == '\0' ||
(quote_len == 0 && temp_id_len > 0
@ -2312,70 +2314,27 @@ int do_para_search(justbegend search_type, size_t *quote, size_t *par,
&& !ISSET(AUTOINDENT)
#endif
))
break;
indent_len = temp_id_len;
line = line->next;
par_len++;
}
break;
indent_len = temp_id_len;
line = line->next;
par_len++;
}
#ifdef HAVE_REGEX_H
/* We no longer need to check quotation. */
regfree(&qreg);
#endif
/* Now par_len is the number of lines in this paragraph. We should
* never call quotes_match() or quote_length() again. */
/* If we're searching for the beginning of the paragraph, move up
* the number of lines in the paragraph minus one, since we want to
* end up on the first line of the paragraph. If we're searching
* for the end of the paragraph, move down the number of lines in
* the paragraph, since we want to end up on the line after the
* last line of the paragraph. */
if (search_type == BEGIN) {
for (; par_len > 1; current_y--, par_len--)
current = current->prev;
} else if (search_type == END) {
for (; par_len > 0; current_y++, par_len--)
current = current->next;
}
/* Save the values of quote_len and par_len. */
assert(quote != NULL && par != NULL);
*quote = quote_len;
*par = par_len;
/* Refresh the screen if needed. */
if (do_refresh)
edit_redraw(current_save, old_pww);
/* Save the values of quote_len, par_len, and indent_len if
* needed. */
if (quote != NULL)
*quote = quote_len;
if (par != NULL)
*par = par_len;
if (indent != NULL)
*indent = indent_len;
return 0;
}
void do_para_begin(void)
{
do_para_search(BEGIN, NULL, NULL, NULL, TRUE);
}
void do_para_end(void)
{
do_para_search(END, NULL, NULL, NULL, TRUE);
return FALSE;
}
/* If full_justify is TRUE, justify the entire file. Otherwise, justify
* the current paragraph. */
void do_justify(int full_justify)
{
size_t quote_len;
/* Length of the initial quotation of the paragraph we
* justify. */
size_t par_len;
/* Number of lines in that paragraph. */
filestruct *first_par_line = NULL;
/* Will be the first line of the resulting justified paragraph.
* For restoring after uncut. */
@ -2385,7 +2344,7 @@ void do_justify(int full_justify)
/* When the paragraph gets modified, all lines from the changed
* one down are stored in the cutbuffer. We back up the
* original to restore it later. */
int allow_respacing;
bool allow_respacing;
/* Whether we should change the spacing at the end of a line
* after justifying it. This should be TRUE whenever we move
* to the next line after justifying the current line. */
@ -2405,8 +2364,6 @@ void do_justify(int full_justify)
int kbinput;
int meta_key;
size_t indent_len; /* Generic indentation length. */
/* If we're justifying the entire file, start at the beginning. */
if (full_justify)
current = fileage;
@ -2414,18 +2371,23 @@ void do_justify(int full_justify)
last_par_line = current;
while (TRUE) {
/* First, search for the beginning of the current paragraph or,
* if we're at the end of it, the beginning of the next
* paragraph. Save the quote length, paragraph length, and
* indentation length and don't refresh the screen yet (since
* we'll do that after we justify). If the search failed and
* we're justifying the whole file, move the last line of the
* text we're justifying to just before the magicline, which is
* where it'll be anyway if we've searched the entire file, and
* break out of the loop; otherwise, refresh the screen and get
* out. */
if (do_para_search(JUSTIFY, &quote_len, &par_len, &indent_len,
FALSE) != 0) {
size_t quote_len;
/* Length of the initial quotation of the paragraph we
* justify. */
size_t par_len;
/* Number of lines in that paragraph. */
/* Find the first line of the paragraph to be justified. That
* is the start of this paragraph if we're in one, or the start
* of the next otherwise. Save the quote length and paragraph
* length (number of lines). Don't refresh the screen yet
* (since we'll do that after we justify). If the search failed
* and we're justifying the whole file, move the last line of
* the text we're justifying to just before the magicline, which
* is where it'll be anyway if we've searched the entire file,
* and break out of the loop; otherwise, refresh the screen and
* get out. */
if (do_para_search(&quote_len, &par_len)) {
if (full_justify) {
/* This should be safe in the event of filebot->prev's
* being NULL, since only last_par_line->next is used if
@ -2441,6 +2403,7 @@ void do_justify(int full_justify)
/* Next step, we loop through the lines of this paragraph,
* justifying each one individually. */
for (; par_len > 0; current_y++, par_len--) {
size_t indent_len; /* Generic indentation length. */
size_t line_len;
size_t display_len;
/* The width of current in screen columns. */
@ -2603,7 +2566,7 @@ void do_justify(int full_justify)
/* Go to the next line. */
current = current->next;
/* We've moved to the next line after justifying the
/* We've moved to the next line after justifying the
* current line. If the justified line was not the last
* line of the paragraph, add a space to the end of it to
* replace the one removed or left out by justify_format().
@ -2662,9 +2625,9 @@ void do_justify(int full_justify)
kbinput = get_kbinput(edit, &meta_key);
#ifndef DISABLE_MOUSE
/* If it was a mouse click, parse it with do_mouse() and it
* might become the unjustify key. Else give it back to the
* input stream. */
/* If it was a mouse click, parse it with do_mouse() and it might
* become the unjustify key. Else give it back to the input
* stream. */
if (kbinput == KEY_MOUSE) {
do_mouse();
kbinput = get_kbinput(edit, &meta_key);
@ -3411,6 +3374,22 @@ int main(int argc, char *argv[])
"> "
#endif
);
#ifdef HAVE_REGEX_H
quoterc = regcomp(&quotereg, quotestr, REG_EXTENDED);
if (quoterc == 0) {
/* We no longer need quotestr, just quotereg. */
free(quotestr);
quotestr = NULL;
} else {
size_t size = regerror(quoterc, &quotereg, NULL, 0);
quoteerr = charalloc(size);
regerror(quoterc, &quotereg, quoteerr, size);
}
#else
quotelen = strlen(quotestr);
#endif /* !HAVE_REGEX_H */
#endif /* !DISABLE_JUSTIFY */
#ifndef DISABLE_SPELLER

4
src/nano.h
View File

@ -465,10 +465,6 @@ typedef struct historyheadtype {
#define VIEW TRUE
#define NOVIEW FALSE
typedef enum {
JUSTIFY, BEGIN, END
} justbegend;
typedef enum {
UP, DOWN
} updown;

29
src/proto.h
View File

@ -51,6 +51,13 @@ extern char *whitespace;
extern char *punct;
extern char *brackets;
extern char *quotestr;
#ifdef HAVE_REGEX_H
extern regex_t quotereg;
extern int quoterc;
extern char *quoteerr;
#else
extern size_t quotelen;
#endif
#endif
#ifndef NANO_SMALL
@ -191,6 +198,7 @@ int check_operating_dir(const char *currpath, int allow_tabcomp);
#ifndef NANO_SMALL
void init_backup_dir(void);
#endif
int copy_file(FILE *inn, FILE *out);
int write_file(const char *name, int tmp, int append, int nonamechange);
#ifndef NANO_SMALL
int write_marked(const char *name, int tmp, int append);
@ -314,28 +322,19 @@ size_t indent_length(const char *line);
#endif
#ifndef DISABLE_JUSTIFY
void justify_format(filestruct *line, size_t skip);
#ifdef HAVE_REGEX_H
size_t quote_length(const char *line, const regex_t *qreg);
#else
size_t quote_length(const char *line);
#endif
#ifdef HAVE_REGEX_H
# define IFREG(a, b) a, b
#else
# define IFREG(a, b) a
#endif
int quotes_match(const char *a_line, size_t a_quote, IFREG(const char
*b_line, const regex_t *qreg));
int quotes_match(const char *a_line, size_t a_quote, const char *b_line);
size_t indents_match(const char *a_line, size_t a_indent, const char
*b_line, size_t b_indent);
bool begpar(const filestruct *const foo);
void do_para_begin(void);
bool inpar(const char *str);
void do_para_end(void);
filestruct *backup_lines(filestruct *first_line, size_t par_len, size_t
quote_len);
int breakable(const char *line, int goal);
int break_line(const char *line, int goal, int force);
int do_para_search(justbegend search_type, size_t *quote, size_t *par,
size_t *indent, int do_refresh);
void do_para_begin(void);
void do_para_end(void);
bool do_para_search(size_t *const quote, size_t *const par);
void do_justify(int full_justify);
void do_justify_void(void);
void do_full_justify(void);