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pager.c
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/**
* @file
* GUI display a file/email/help in a viewport with paging
*
* @authors
* Copyright (C) 1996-2002,2007,2010,2012-2013 Michael R. Elkins <[email protected]>
*
* @copyright
* This program is free software: you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free Software
* Foundation, either version 2 of the License, or (at your option) any later
* version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <stddef.h>
#include <ctype.h>
#include <errno.h>
#include <inttypes.h>
#ifdef ENABLE_NLS
#include <libintl.h>
#endif
#include <limits.h>
#include <regex.h>
#include <stdbool.h>
#include <string.h>
#include <sys/stat.h>
#include <unistd.h>
#include <wchar.h>
#include "mutt.h"
#include "pager.h"
#include "alias.h"
#include "attach.h"
#include "body.h"
#include "context.h"
#include "envelope.h"
#include "format_flags.h"
#include "globals.h"
#include "header.h"
#include "keymap.h"
#include "lib/lib.h"
#include "mailbox.h"
#include "mapping.h"
#include "mbyte.h"
#include "mutt_curses.h"
#include "mutt_menu.h"
#include "mutt_regex.h"
#include "mx.h"
#include "ncrypt/ncrypt.h"
#include "opcodes.h"
#include "options.h"
#include "pattern.h"
#include "protos.h"
#include "sort.h"
#ifdef USE_SIDEBAR
#include "sidebar.h"
#endif
#ifdef USE_NNTP
#include "nntp.h"
#endif
#define ISHEADER(x) ((x) == MT_COLOR_HEADER || (x) == MT_COLOR_HDEFAULT)
#define IsAttach(x) (x && (x)->bdy)
#define IsMsgAttach(x) (x && (x)->fp && (x)->bdy && (x)->bdy->hdr)
#define IsHeader(x) (x && (x)->hdr && !(x)->bdy)
static const char *Not_available_in_this_menu =
N_("Not available in this menu.");
static const char *Mailbox_is_read_only = N_("Mailbox is read-only.");
static const char *Function_not_permitted_in_attach_message_mode =
N_("Function not permitted in attach-message mode.");
/* hack to return to position when returning from index to same message */
static int TopLine = 0;
static struct Header *OldHdr = NULL;
#define CHECK_MODE(x) \
if (!(x)) \
{ \
mutt_flushinp(); \
mutt_error(_(Not_available_in_this_menu)); \
break; \
}
#define CHECK_READONLY \
if (!Context || Context->readonly) \
{ \
mutt_flushinp(); \
mutt_error(_(Mailbox_is_read_only)); \
break; \
}
#define CHECK_ATTACH \
if (option(OPT_ATTACH_MSG)) \
{ \
mutt_flushinp(); \
mutt_error(_(Function_not_permitted_in_attach_message_mode)); \
break; \
}
#define CHECK_ACL(aclbit, action) \
if (!Context || !mutt_bit_isset(Context->rights, aclbit)) \
{ \
mutt_flushinp(); \
/* L10N: %s is one of the CHECK_ACL entries below. */ \
mutt_error(_("%s: Operation not permitted by ACL"), action); \
break; \
}
/**
* struct QClass - Style of quoted text
*/
struct QClass
{
int length;
int index;
int color;
char *prefix;
struct QClass *next, *prev;
struct QClass *down, *up;
};
/**
* struct Syntax - Highlighting for a line of text
*/
struct Syntax
{
int color;
int first;
int last;
};
/**
* struct Line - A line of text in the pager
*/
struct Line
{
LOFF_T offset;
short type;
short continuation;
short chunks;
short search_cnt;
struct Syntax *syntax;
struct Syntax *search;
struct QClass *quote;
unsigned int is_cont_hdr; /**< this line is a continuation of the previous header line */
};
#define ANSI_OFF (1 << 0)
#define ANSI_BLINK (1 << 1)
#define ANSI_BOLD (1 << 2)
#define ANSI_UNDERLINE (1 << 3)
#define ANSI_REVERSE (1 << 4)
#define ANSI_COLOR (1 << 5)
/**
* struct AnsiAttr - An ANSI escape sequence
*/
struct AnsiAttr
{
int attr;
int fg;
int bg;
int pair;
};
static short InHelp = 0;
#if defined(USE_SLANG_CURSES) || defined(HAVE_RESIZETERM)
/**
* struct Resize - Keep track of screen resizing
*/
static struct Resize
{
int line;
int search_compiled;
int search_back;
} *Resize = NULL;
#endif
#define NUM_SIG_LINES 4
static int check_sig(const char *s, struct Line *info, int n)
{
int count = 0;
while (n > 0 && count <= NUM_SIG_LINES)
{
if (info[n].type != MT_COLOR_SIGNATURE)
break;
count++;
n--;
}
if (count == 0)
return -1;
if (count > NUM_SIG_LINES)
{
/* check for a blank line */
while (*s)
{
if (!ISSPACE(*s))
return 0;
s++;
}
return -1;
}
return 0;
}
static void resolve_color(struct Line *line_info, int n, int cnt, int flags,
int special, struct AnsiAttr *a)
{
int def_color; /* color without syntax highlight */
int color; /* final color */
static int last_color; /* last color set */
bool search = false;
int i, m;
if (!cnt)
last_color = -1; /* force attrset() */
if (line_info[n].continuation)
{
if (!cnt && option(OPT_MARKERS))
{
SETCOLOR(MT_COLOR_MARKERS);
addch('+');
last_color = ColorDefs[MT_COLOR_MARKERS];
}
m = (line_info[n].syntax)[0].first;
cnt += (line_info[n].syntax)[0].last;
}
else
m = n;
if (!(flags & MUTT_SHOWCOLOR))
def_color = ColorDefs[MT_COLOR_NORMAL];
else if (line_info[m].type == MT_COLOR_HEADER)
def_color = (line_info[m].syntax)[0].color;
else
def_color = ColorDefs[line_info[m].type];
if ((flags & MUTT_SHOWCOLOR) && line_info[m].type == MT_COLOR_QUOTED)
{
struct QClass *class = line_info[m].quote;
if (class)
{
def_color = class->color;
while (class && class->length > cnt)
{
def_color = class->color;
class = class->up;
}
}
}
color = def_color;
if (flags & MUTT_SHOWCOLOR)
{
for (i = 0; i < line_info[m].chunks; i++)
{
/* we assume the chunks are sorted */
if (cnt > (line_info[m].syntax)[i].last)
continue;
if (cnt < (line_info[m].syntax)[i].first)
break;
if (cnt != (line_info[m].syntax)[i].last)
{
color = (line_info[m].syntax)[i].color;
break;
}
/* don't break here, as cnt might be
* in the next chunk as well */
}
}
if (flags & MUTT_SEARCH)
{
for (i = 0; i < line_info[m].search_cnt; i++)
{
if (cnt > (line_info[m].search)[i].last)
continue;
if (cnt < (line_info[m].search)[i].first)
break;
if (cnt != (line_info[m].search)[i].last)
{
color = ColorDefs[MT_COLOR_SEARCH];
search = true;
break;
}
}
}
/* handle "special" bold & underlined characters */
if (special || a->attr)
{
#ifdef HAVE_COLOR
if ((a->attr & ANSI_COLOR))
{
if (a->pair == -1)
a->pair = mutt_alloc_color(a->fg, a->bg);
color = a->pair;
if (a->attr & ANSI_BOLD)
color |= A_BOLD;
}
else
#endif
if ((special & A_BOLD) || (a->attr & ANSI_BOLD))
{
if (ColorDefs[MT_COLOR_BOLD] && !search)
color = ColorDefs[MT_COLOR_BOLD];
else
color ^= A_BOLD;
}
if ((special & A_UNDERLINE) || (a->attr & ANSI_UNDERLINE))
{
if (ColorDefs[MT_COLOR_UNDERLINE] && !search)
color = ColorDefs[MT_COLOR_UNDERLINE];
else
color ^= A_UNDERLINE;
}
else if (a->attr & ANSI_REVERSE)
{
color ^= A_REVERSE;
}
else if (a->attr & ANSI_BLINK)
{
color ^= A_BLINK;
}
else if (a->attr & ANSI_OFF)
{
a->attr = 0;
}
}
if (color != last_color)
{
ATTRSET(color);
last_color = color;
}
}
static void append_line(struct Line *line_info, int n, int cnt)
{
int m;
line_info[n + 1].type = line_info[n].type;
(line_info[n + 1].syntax)[0].color = (line_info[n].syntax)[0].color;
line_info[n + 1].continuation = 1;
/* find the real start of the line */
for (m = n; m >= 0; m--)
if (line_info[m].continuation == 0)
break;
(line_info[n + 1].syntax)[0].first = m;
(line_info[n + 1].syntax)[0].last =
(line_info[n].continuation) ? cnt + (line_info[n].syntax)[0].last : cnt;
}
static void new_class_color(struct QClass *class, int *q_level)
{
class->index = (*q_level)++;
class->color = ColorQuote[class->index % ColorQuoteUsed];
}
static void shift_class_colors(struct QClass *quote_list,
struct QClass *new_class, int index, int *q_level)
{
struct QClass *q_list = NULL;
q_list = quote_list;
new_class->index = -1;
while (q_list)
{
if (q_list->index >= index)
{
q_list->index++;
q_list->color = ColorQuote[q_list->index % ColorQuoteUsed];
}
if (q_list->down)
q_list = q_list->down;
else if (q_list->next)
q_list = q_list->next;
else
{
while (!q_list->next)
{
q_list = q_list->up;
if (!q_list)
break;
}
if (q_list)
q_list = q_list->next;
}
}
new_class->index = index;
new_class->color = ColorQuote[index % ColorQuoteUsed];
(*q_level)++;
}
static void cleanup_quote(struct QClass **quote_list)
{
struct QClass *ptr = NULL;
while (*quote_list)
{
if ((*quote_list)->down)
cleanup_quote(&((*quote_list)->down));
ptr = (*quote_list)->next;
if ((*quote_list)->prefix)
FREE(&(*quote_list)->prefix);
FREE(quote_list);
*quote_list = ptr;
}
return;
}
static struct QClass *classify_quote(struct QClass **quote_list, const char *qptr,
int length, int *force_redraw, int *q_level)
{
struct QClass *q_list = *quote_list;
struct QClass *class = NULL, *tmp = NULL, *ptr = NULL, *save = NULL;
char *tail_qptr = NULL;
int offset, tail_lng;
int index = -1;
if (ColorQuoteUsed <= 1)
{
/* not much point in classifying quotes... */
if (*quote_list == NULL)
{
class = safe_calloc(1, sizeof(struct QClass));
class->color = ColorQuote[0];
*quote_list = class;
}
return *quote_list;
}
/* Did I mention how much I like emulating Lisp in C? */
/* classify quoting prefix */
while (q_list)
{
if (length <= q_list->length)
{
/* case 1: check the top level nodes */
if (mutt_strncmp(qptr, q_list->prefix, length) == 0)
{
if (length == q_list->length)
return q_list; /* same prefix: return the current class */
/* found shorter prefix */
if (!tmp)
{
/* add a node above q_list */
tmp = safe_calloc(1, sizeof(struct QClass));
tmp->prefix = safe_calloc(1, length + 1);
strncpy(tmp->prefix, qptr, length);
tmp->length = length;
/* replace q_list by tmp in the top level list */
if (q_list->next)
{
tmp->next = q_list->next;
q_list->next->prev = tmp;
}
if (q_list->prev)
{
tmp->prev = q_list->prev;
q_list->prev->next = tmp;
}
/* make q_list a child of tmp */
tmp->down = q_list;
q_list->up = tmp;
/* q_list has no siblings for now */
q_list->next = NULL;
q_list->prev = NULL;
/* update the root if necessary */
if (q_list == *quote_list)
*quote_list = tmp;
index = q_list->index;
/* tmp should be the return class too */
class = tmp;
/* next class to test; if tmp is a shorter prefix for another
* node, that node can only be in the top level list, so don't
* go down after this point
*/
q_list = tmp->next;
}
else
{
/* found another branch for which tmp is a shorter prefix */
/* save the next sibling for later */
save = q_list->next;
/* unlink q_list from the top level list */
if (q_list->next)
q_list->next->prev = q_list->prev;
if (q_list->prev)
q_list->prev->next = q_list->next;
/* at this point, we have a tmp->down; link q_list to it */
ptr = tmp->down;
/* sibling order is important here, q_list should be linked last */
while (ptr->next)
ptr = ptr->next;
ptr->next = q_list;
q_list->next = NULL;
q_list->prev = ptr;
q_list->up = tmp;
index = q_list->index;
/* next class to test; as above, we shouldn't go down */
q_list = save;
}
/* we found a shorter prefix, so certain quotes have changed classes */
*force_redraw = 1;
continue;
}
else
{
/* shorter, but not a substring of the current class: try next */
q_list = q_list->next;
continue;
}
}
else
{
/* case 2: try subclassing the current top level node */
/* tmp != NULL means we already found a shorter prefix at case 1 */
if (tmp == NULL && (mutt_strncmp(qptr, q_list->prefix, q_list->length) == 0))
{
/* ok, it's a subclass somewhere on this branch */
ptr = q_list;
offset = q_list->length;
q_list = q_list->down;
tail_lng = length - offset;
tail_qptr = (char *) qptr + offset;
while (q_list)
{
if (length <= q_list->length)
{
if (mutt_strncmp(tail_qptr, (q_list->prefix) + offset, tail_lng) == 0)
{
/* same prefix: return the current class */
if (length == q_list->length)
return q_list;
/* found shorter common prefix */
if (!tmp)
{
/* add a node above q_list */
tmp = safe_calloc(1, sizeof(struct QClass));
tmp->prefix = safe_calloc(1, length + 1);
strncpy(tmp->prefix, qptr, length);
tmp->length = length;
/* replace q_list by tmp */
if (q_list->next)
{
tmp->next = q_list->next;
q_list->next->prev = tmp;
}
if (q_list->prev)
{
tmp->prev = q_list->prev;
q_list->prev->next = tmp;
}
/* make q_list a child of tmp */
tmp->down = q_list;
tmp->up = q_list->up;
q_list->up = tmp;
if (tmp->up->down == q_list)
tmp->up->down = tmp;
/* q_list has no siblings */
q_list->next = NULL;
q_list->prev = NULL;
index = q_list->index;
/* tmp should be the return class too */
class = tmp;
/* next class to test */
q_list = tmp->next;
}
else
{
/* found another branch for which tmp is a shorter prefix */
/* save the next sibling for later */
save = q_list->next;
/* unlink q_list from the top level list */
if (q_list->next)
q_list->next->prev = q_list->prev;
if (q_list->prev)
q_list->prev->next = q_list->next;
/* at this point, we have a tmp->down; link q_list to it */
ptr = tmp->down;
while (ptr->next)
ptr = ptr->next;
ptr->next = q_list;
q_list->next = NULL;
q_list->prev = ptr;
q_list->up = tmp;
index = q_list->index;
/* next class to test */
q_list = save;
}
/* we found a shorter prefix, so we need a redraw */
*force_redraw = 1;
continue;
}
else
{
q_list = q_list->next;
continue;
}
}
else
{
/* longer than the current prefix: try subclassing it */
if (tmp == NULL && (mutt_strncmp(tail_qptr, (q_list->prefix) + offset,
q_list->length - offset) == 0))
{
/* still a subclass: go down one level */
ptr = q_list;
offset = q_list->length;
q_list = q_list->down;
tail_lng = length - offset;
tail_qptr = (char *) qptr + offset;
continue;
}
else
{
/* nope, try the next prefix */
q_list = q_list->next;
continue;
}
}
}
/* still not found so far: add it as a sibling to the current node */
if (!class)
{
tmp = safe_calloc(1, sizeof(struct QClass));
tmp->prefix = safe_calloc(1, length + 1);
strncpy(tmp->prefix, qptr, length);
tmp->length = length;
if (ptr->down)
{
tmp->next = ptr->down;
ptr->down->prev = tmp;
}
ptr->down = tmp;
tmp->up = ptr;
new_class_color(tmp, q_level);
return tmp;
}
else
{
if (index != -1)
shift_class_colors(*quote_list, tmp, index, q_level);
return class;
}
}
else
{
/* nope, try the next prefix */
q_list = q_list->next;
continue;
}
}
}
if (!class)
{
/* not found so far: add it as a top level class */
class = safe_calloc(1, sizeof(struct QClass));
class->prefix = safe_calloc(1, length + 1);
strncpy(class->prefix, qptr, length);
class->length = length;
new_class_color(class, q_level);
if (*quote_list)
{
class->next = *quote_list;
(*quote_list)->prev = class;
}
*quote_list = class;
}
if (index != -1)
shift_class_colors(*quote_list, tmp, index, q_level);
return class;
}
static int brailleLine = -1;
static int brailleCol = -1;
static int check_attachment_marker(char *p)
{
char *q = AttachmentMarker;
for (; *p == *q && *q && *p && *q != '\a' && *p != '\a'; p++, q++)
;
return (int) (*p - *q);
}
static void resolve_types(char *buf, char *raw, struct Line *line_info, int n,
int last, struct QClass **quote_list, int *q_level,
int *force_redraw, int q_classify)
{
struct ColorLine *color_line = NULL;
regmatch_t pmatch[1], smatch[1];
bool found;
bool null_rx;
int offset, i;
if (n == 0 || ISHEADER(line_info[n - 1].type))
{
if (buf[0] == '\n') /* end of header */
{
line_info[n].type = MT_COLOR_NORMAL;
getyx(stdscr, brailleLine, brailleCol);
}
else
{
/* if this is a continuation of the previous line, use the previous
* line's color as default. */
if (n > 0 && (buf[0] == ' ' || buf[0] == '\t'))
{
line_info[n].type = line_info[n - 1].type; /* wrapped line */
if (!option(OPT_HEADER_COLOR_PARTIAL))
{
(line_info[n].syntax)[0].color = (line_info[n - 1].syntax)[0].color;
line_info[n].is_cont_hdr = 1;
}
}
else
{
line_info[n].type = MT_COLOR_HDEFAULT;
}
/* When this option is unset, we color the entire header the
* same color. Otherwise, we handle the header patterns just
* like body patterns (further below).
*/
if (!option(OPT_HEADER_COLOR_PARTIAL))
{
for (color_line = ColorHdrList; color_line; color_line = color_line->next)
{
if (REGEXEC(color_line->rx, buf) == 0)
{
line_info[n].type = MT_COLOR_HEADER;
line_info[n].syntax[0].color = color_line->pair;
if (line_info[n].is_cont_hdr)
{
/* adjust the previous continuation lines to reflect the color of this continuation line */
int j;
for (j = n - 1; j >= 0 && line_info[j].is_cont_hdr; --j)
{
line_info[j].type = line_info[n].type;
line_info[j].syntax[0].color = line_info[n].syntax[0].color;
}
/* now adjust the first line of this header field */
if (j >= 0)
{
line_info[j].type = line_info[n].type;
line_info[j].syntax[0].color = line_info[n].syntax[0].color;
}
*force_redraw = 1; /* the previous lines have already been drawn on the screen */
}
break;
}
}
}
}
}
else if (mutt_strncmp("\033[0m", raw, 4) == 0) /* a little hack... */
line_info[n].type = MT_COLOR_NORMAL;
else if (check_attachment_marker((char *) raw) == 0)
line_info[n].type = MT_COLOR_ATTACHMENT;
else if ((mutt_strcmp("-- \n", buf) == 0) || (mutt_strcmp("-- \r\n", buf) == 0))
{
i = n + 1;
line_info[n].type = MT_COLOR_SIGNATURE;
while (i < last && check_sig(buf, line_info, i - 1) == 0 &&
(line_info[i].type == MT_COLOR_NORMAL || line_info[i].type == MT_COLOR_QUOTED ||
line_info[i].type == MT_COLOR_HEADER))
{
/* oops... */
if (line_info[i].chunks)
{
line_info[i].chunks = 0;
safe_realloc(&(line_info[n].syntax), sizeof(struct Syntax));
}
line_info[i++].type = MT_COLOR_SIGNATURE;
}
}
else if (check_sig(buf, line_info, n - 1) == 0)
line_info[n].type = MT_COLOR_SIGNATURE;
else if (regexec((regex_t *) QuoteRegexp.rx, buf, 1, pmatch, 0) == 0)
{
if (regexec((regex_t *) Smileys.rx, buf, 1, smatch, 0) == 0)
{
if (smatch[0].rm_so > 0)
{
char c;
/* hack to avoid making an extra copy of buf */
c = buf[smatch[0].rm_so];
buf[smatch[0].rm_so] = 0;
if (regexec((regex_t *) QuoteRegexp.rx, buf, 1, pmatch, 0) == 0)
{
if (q_classify && line_info[n].quote == NULL)
line_info[n].quote = classify_quote(quote_list, buf + pmatch[0].rm_so,
pmatch[0].rm_eo - pmatch[0].rm_so,
force_redraw, q_level);
line_info[n].type = MT_COLOR_QUOTED;
}
else
line_info[n].type = MT_COLOR_NORMAL;
buf[smatch[0].rm_so] = c;
}
else
line_info[n].type = MT_COLOR_NORMAL;
}
else
{
if (q_classify && line_info[n].quote == NULL)
line_info[n].quote = classify_quote(quote_list, buf + pmatch[0].rm_so,
pmatch[0].rm_eo - pmatch[0].rm_so,
force_redraw, q_level);
line_info[n].type = MT_COLOR_QUOTED;
}
}
else
line_info[n].type = MT_COLOR_NORMAL;
/* body patterns */
if (line_info[n].type == MT_COLOR_NORMAL || line_info[n].type == MT_COLOR_QUOTED ||
(line_info[n].type == MT_COLOR_HDEFAULT && option(OPT_HEADER_COLOR_PARTIAL)))
{
size_t nl;
/* don't consider line endings part of the buffer
* for regex matching */
if ((nl = mutt_strlen(buf)) > 0 && buf[nl - 1] == '\n')
buf[nl - 1] = 0;
i = 0;
offset = 0;
line_info[n].chunks = 0;
do
{
if (!buf[offset])
break;
found = false;
null_rx = false;
if (line_info[n].type == MT_COLOR_HDEFAULT)
color_line = ColorHdrList;
else
color_line = ColorBodyList;
while (color_line)
{
if (regexec(&color_line->rx, buf + offset, 1, pmatch, (offset ? REG_NOTBOL : 0)) == 0)
{
if (pmatch[0].rm_eo != pmatch[0].rm_so)
{
if (!found)
{
/* Abort if we fill up chunks.
* Yes, this really happened. See #3888 */
if (line_info[n].chunks == SHRT_MAX)
{
null_rx = false;
break;
}
if (++(line_info[n].chunks) > 1)
safe_realloc(&(line_info[n].syntax),
(line_info[n].chunks) * sizeof(struct Syntax));
}
i = line_info[n].chunks - 1;
pmatch[0].rm_so += offset;
pmatch[0].rm_eo += offset;
if (!found || pmatch[0].rm_so < (line_info[n].syntax)[i].first ||
(pmatch[0].rm_so == (line_info[n].syntax)[i].first &&
pmatch[0].rm_eo > (line_info[n].syntax)[i].last))
{
(line_info[n].syntax)[i].color = color_line->pair;
(line_info[n].syntax)[i].first = pmatch[0].rm_so;
(line_info[n].syntax)[i].last = pmatch[0].rm_eo;
}
found = true;
null_rx = false;
}
else
null_rx = true; /* empty regexp; don't add it, but keep looking */
}
color_line = color_line->next;
}
if (null_rx)
offset++; /* avoid degenerate cases */
else
offset = (line_info[n].syntax)[i].last;
} while (found || null_rx);
if (nl > 0)
buf[nl] = '\n';
}
/* attachment patterns */
if (line_info[n].type == MT_COLOR_ATTACHMENT)
{
size_t nl;
/* don't consider line endings part of the buffer for regex matching */
nl = mutt_strlen(buf);
if ((nl > 0) && (buf[nl - 1] == '\n'))
buf[nl - 1] = 0;
i = 0;
offset = 0;
line_info[n].chunks = 0;
do
{
if (!buf[offset])
break;
found = false;
null_rx = false;
for (color_line = ColorAttachList; color_line; color_line = color_line->next)
{
if (regexec(&color_line->rx, buf + offset, 1, pmatch, (offset ? REG_NOTBOL : 0)) == 0)
{
if (pmatch[0].rm_eo != pmatch[0].rm_so)
{
if (!found)
{
if (++(line_info[n].chunks) > 1)
safe_realloc(&(line_info[n].syntax),
(line_info[n].chunks) * sizeof(struct Syntax));
}
i = line_info[n].chunks - 1;
pmatch[0].rm_so += offset;
pmatch[0].rm_eo += offset;
if (!found || pmatch[0].rm_so < (line_info[n].syntax)[i].first ||
(pmatch[0].rm_so == (line_info[n].syntax)[i].first &&