version 1.229, 2014/09/07 00:21:53 |
version 1.235, 2014/10/25 14:35:37 |
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struct eqn_node *last_eqn; /* last equation parsed */ |
struct eqn_node *last_eqn; /* last equation parsed */ |
struct eqn_node *first_eqn; /* first equation parsed */ |
struct eqn_node *first_eqn; /* first equation parsed */ |
struct eqn_node *eqn; /* current equation being parsed */ |
struct eqn_node *eqn; /* current equation being parsed */ |
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int eqn_inline; /* current equation is inline */ |
int options; /* parse options */ |
int options; /* parse options */ |
int rstacksz; /* current size limit of rstack */ |
int rstacksz; /* current size limit of rstack */ |
int rstackpos; /* position in rstack */ |
int rstackpos; /* position in rstack */ |
Line 183 static enum rofferr roff_cond(ROFF_ARGS); |
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Line 184 static enum rofferr roff_cond(ROFF_ARGS); |
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static enum rofferr roff_cond_text(ROFF_ARGS); |
static enum rofferr roff_cond_text(ROFF_ARGS); |
static enum rofferr roff_cond_sub(ROFF_ARGS); |
static enum rofferr roff_cond_sub(ROFF_ARGS); |
static enum rofferr roff_ds(ROFF_ARGS); |
static enum rofferr roff_ds(ROFF_ARGS); |
static int roff_evalcond(const char *, int *); |
static enum rofferr roff_eqndelim(struct roff *, |
static int roff_evalnum(const char *, int *, int *, int); |
char **, size_t *, int); |
static int roff_evalpar(const char *, int *, int *); |
static int roff_evalcond(struct roff *r, int, |
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const char *, int *); |
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static int roff_evalnum(struct roff *, int, |
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const char *, int *, int *, int); |
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static int roff_evalpar(struct roff *, int, |
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const char *, int *, int *); |
static int roff_evalstrcond(const char *, int *); |
static int roff_evalstrcond(const char *, int *); |
static void roff_free1(struct roff *); |
static void roff_free1(struct roff *); |
static void roff_freereg(struct roffreg *); |
static void roff_freereg(struct roffreg *); |
Line 201 static const char *roff_getstrn(const struct roff *, |
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Line 207 static const char *roff_getstrn(const struct roff *, |
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static enum rofferr roff_it(ROFF_ARGS); |
static enum rofferr roff_it(ROFF_ARGS); |
static enum rofferr roff_line_ignore(ROFF_ARGS); |
static enum rofferr roff_line_ignore(ROFF_ARGS); |
static enum rofferr roff_nr(ROFF_ARGS); |
static enum rofferr roff_nr(ROFF_ARGS); |
static void roff_openeqn(struct roff *, const char *, |
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int, int, const char *); |
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static enum rofft roff_parse(struct roff *, char *, int *, |
static enum rofft roff_parse(struct roff *, char *, int *, |
int, int); |
int, int); |
static enum rofferr roff_parsetext(char **, size_t *, int, int *); |
static enum rofferr roff_parsetext(char **, size_t *, int, int *); |
Line 619 roff_res(struct roff *r, char **bufp, size_t *szp, int |
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Line 623 roff_res(struct roff *r, char **bufp, size_t *szp, int |
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case 'B': |
case 'B': |
npos = 0; |
npos = 0; |
ubuf[0] = arg_complete && |
ubuf[0] = arg_complete && |
roff_evalnum(stnam, &npos, NULL, 0) && |
roff_evalnum(r, ln, stnam, &npos, NULL, 0) && |
stnam + npos + 1 == cp ? '1' : '0'; |
stnam + npos + 1 == cp ? '1' : '0'; |
ubuf[1] = '\0'; |
ubuf[1] = '\0'; |
break; |
break; |
Line 724 roff_parseln(struct roff *r, int ln, char **bufp, |
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Line 728 roff_parseln(struct roff *r, int ln, char **bufp, |
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enum rofferr e; |
enum rofferr e; |
int ppos, ctl; |
int ppos, ctl; |
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/* |
/* Handle in-line equation delimiters. */ |
* Run the reserved-word filter only if we have some reserved |
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* words to fill in. |
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*/ |
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if (r->last_eqn != NULL && r->last_eqn->delim && |
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(r->eqn == NULL || r->eqn_inline)) { |
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e = roff_eqndelim(r, bufp, szp, pos); |
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if (e == ROFF_REPARSE) |
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return(e); |
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assert(e == ROFF_CONT); |
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} |
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/* Expand some escape sequences. */ |
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e = roff_res(r, bufp, szp, ln, pos); |
e = roff_res(r, bufp, szp, ln, pos); |
if (ROFF_IGN == e) |
if (ROFF_IGN == e) |
return(e); |
return(e); |
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* or string condition. |
* or string condition. |
*/ |
*/ |
static int |
static int |
roff_evalcond(const char *v, int *pos) |
roff_evalcond(struct roff *r, int ln, const char *v, int *pos) |
{ |
{ |
int wanttrue, number; |
int wanttrue, number; |
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Line 1261 roff_evalcond(const char *v, int *pos) |
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Line 1272 roff_evalcond(const char *v, int *pos) |
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break; |
break; |
} |
} |
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if (roff_evalnum(v, pos, &number, 0)) |
if (roff_evalnum(r, ln, v, pos, &number, 0)) |
return((number > 0) == wanttrue); |
return((number > 0) == wanttrue); |
else |
else |
return(roff_evalstrcond(v, pos) == wanttrue); |
return(roff_evalstrcond(v, pos) == wanttrue); |
Line 1290 roff_cond(ROFF_ARGS) |
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Line 1301 roff_cond(ROFF_ARGS) |
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r->last->rule = ROFF_el == tok ? |
r->last->rule = ROFF_el == tok ? |
(r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) : |
(r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) : |
roff_evalcond(*bufp, &pos); |
roff_evalcond(r, ln, *bufp, &pos); |
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/* |
/* |
* An if-else will put the NEGATION of the current evaluated |
* An if-else will put the NEGATION of the current evaluated |
Line 1456 roff_getop(const char *v, int *pos, char *res) |
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Line 1467 roff_getop(const char *v, int *pos, char *res) |
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* or a single signed integer number. |
* or a single signed integer number. |
*/ |
*/ |
static int |
static int |
roff_evalpar(const char *v, int *pos, int *res) |
roff_evalpar(struct roff *r, int ln, |
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const char *v, int *pos, int *res) |
{ |
{ |
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if ('(' != v[*pos]) |
if ('(' != v[*pos]) |
return(roff_getnum(v, pos, res)); |
return(roff_getnum(v, pos, res)); |
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(*pos)++; |
(*pos)++; |
if ( ! roff_evalnum(v, pos, res, 1)) |
if ( ! roff_evalnum(r, ln, v, pos, res, 1)) |
return(0); |
return(0); |
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/* |
/* |
Line 1485 roff_evalpar(const char *v, int *pos, int *res) |
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Line 1497 roff_evalpar(const char *v, int *pos, int *res) |
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* Proceed left to right, there is no concept of precedence. |
* Proceed left to right, there is no concept of precedence. |
*/ |
*/ |
static int |
static int |
roff_evalnum(const char *v, int *pos, int *res, int skipwhite) |
roff_evalnum(struct roff *r, int ln, const char *v, |
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int *pos, int *res, int skipwhite) |
{ |
{ |
int mypos, operand2; |
int mypos, operand2; |
char operator; |
char operator; |
Line 1499 roff_evalnum(const char *v, int *pos, int *res, int sk |
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Line 1512 roff_evalnum(const char *v, int *pos, int *res, int sk |
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while (isspace((unsigned char)v[*pos])) |
while (isspace((unsigned char)v[*pos])) |
(*pos)++; |
(*pos)++; |
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if ( ! roff_evalpar(v, pos, res)) |
if ( ! roff_evalpar(r, ln, v, pos, res)) |
return(0); |
return(0); |
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while (1) { |
while (1) { |
Line 1514 roff_evalnum(const char *v, int *pos, int *res, int sk |
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Line 1527 roff_evalnum(const char *v, int *pos, int *res, int sk |
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while (isspace((unsigned char)v[*pos])) |
while (isspace((unsigned char)v[*pos])) |
(*pos)++; |
(*pos)++; |
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if ( ! roff_evalpar(v, pos, &operand2)) |
if ( ! roff_evalpar(r, ln, v, pos, &operand2)) |
return(0); |
return(0); |
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if (skipwhite) |
if (skipwhite) |
Line 1535 roff_evalnum(const char *v, int *pos, int *res, int sk |
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Line 1548 roff_evalnum(const char *v, int *pos, int *res, int sk |
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*res *= operand2; |
*res *= operand2; |
break; |
break; |
case '/': |
case '/': |
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if (0 == operand2) { |
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mandoc_msg(MANDOCERR_DIVZERO, |
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r->parse, ln, *pos, v); |
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*res = 0; |
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break; |
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} |
*res /= operand2; |
*res /= operand2; |
break; |
break; |
case '%': |
case '%': |
Line 1709 roff_nr(ROFF_ARGS) |
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Line 1728 roff_nr(ROFF_ARGS) |
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if ('+' == sign || '-' == sign) |
if ('+' == sign || '-' == sign) |
val++; |
val++; |
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if (roff_evalnum(val, NULL, &iv, 0)) |
if (roff_evalnum(r, ln, val, NULL, &iv, 0)) |
roff_setreg(r, key, iv, sign); |
roff_setreg(r, key, iv, sign); |
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return(ROFF_IGN); |
return(ROFF_IGN); |
Line 1841 roff_T_(ROFF_ARGS) |
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Line 1860 roff_T_(ROFF_ARGS) |
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return(ROFF_IGN); |
return(ROFF_IGN); |
} |
} |
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#if 0 |
/* |
static int |
* Handle in-line equation delimiters. |
roff_closeeqn(struct roff *r) |
*/ |
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static enum rofferr |
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roff_eqndelim(struct roff *r, char **bufp, size_t *szp, int pos) |
{ |
{ |
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char *cp1, *cp2; |
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const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr; |
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return(r->eqn && ROFF_EQN == eqn_end(&r->eqn) ? 1 : 0); |
/* |
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* Outside equations, look for an opening delimiter. |
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* If we are inside an equation, we already know it is |
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* in-line, or this function wouldn't have been called; |
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* so look for a closing delimiter. |
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*/ |
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cp1 = *bufp + pos; |
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cp2 = strchr(cp1, r->eqn == NULL ? |
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r->last_eqn->odelim : r->last_eqn->cdelim); |
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if (cp2 == NULL) |
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return(ROFF_CONT); |
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*cp2++ = '\0'; |
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bef_pr = bef_nl = aft_nl = aft_pr = ""; |
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/* Handle preceding text, protecting whitespace. */ |
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if (**bufp != '\0') { |
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if (r->eqn == NULL) |
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bef_pr = "\\&"; |
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bef_nl = "\n"; |
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} |
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/* |
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* Prepare replacing the delimiter with an equation macro |
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* and drop leading white space from the equation. |
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*/ |
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if (r->eqn == NULL) { |
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while (*cp2 == ' ') |
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cp2++; |
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mac = ".EQ"; |
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} else |
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mac = ".EN"; |
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/* Handle following text, protecting whitespace. */ |
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if (*cp2 != '\0') { |
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aft_nl = "\n"; |
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if (r->eqn != NULL) |
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aft_pr = "\\&"; |
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} |
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/* Do the actual replacement. */ |
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*szp = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", *bufp, |
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bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1; |
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free(*bufp); |
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*bufp = cp1; |
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/* Toggle the in-line state of the eqn subsystem. */ |
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r->eqn_inline = r->eqn == NULL; |
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return(ROFF_REPARSE); |
} |
} |
#endif |
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static void |
static enum rofferr |
roff_openeqn(struct roff *r, const char *name, int line, |
roff_EQ(ROFF_ARGS) |
int offs, const char *buf) |
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{ |
{ |
struct eqn_node *e; |
struct eqn_node *e; |
int poff; |
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assert(NULL == r->eqn); |
assert(NULL == r->eqn); |
e = eqn_alloc(name, offs, line, r->parse); |
e = eqn_alloc(ppos, ln, r->parse); |
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if (r->last_eqn) |
if (r->last_eqn) { |
r->last_eqn->next = e; |
r->last_eqn->next = e; |
else |
e->delim = r->last_eqn->delim; |
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e->odelim = r->last_eqn->odelim; |
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e->cdelim = r->last_eqn->cdelim; |
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} else |
r->first_eqn = r->last_eqn = e; |
r->first_eqn = r->last_eqn = e; |
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r->eqn = r->last_eqn = e; |
r->eqn = r->last_eqn = e; |
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if (buf) { |
if ((*bufp)[pos]) |
poff = 0; |
mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos, |
eqn_read(&r->eqn, line, buf, offs, &poff); |
".EQ %s", *bufp + pos); |
} |
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} |
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static enum rofferr |
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roff_EQ(ROFF_ARGS) |
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{ |
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roff_openeqn(r, *bufp + pos, ln, ppos, NULL); |
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return(ROFF_IGN); |
return(ROFF_IGN); |
} |
} |
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