=================================================================== RCS file: /cvs/mandoc/roff.c,v retrieving revision 1.11 retrieving revision 1.12 diff -u -p -r1.11 -r1.12 --- mandoc/roff.c 2008/11/27 14:02:41 1.11 +++ mandoc/roff.c 2008/11/27 16:54:58 1.12 @@ -1,4 +1,4 @@ -/* $Id: roff.c,v 1.11 2008/11/27 14:02:41 kristaps Exp $ */ +/* $Id: roff.c,v 1.12 2008/11/27 16:54:58 kristaps Exp $ */ /* * Copyright (c) 2008 Kristaps Dzonsons * @@ -19,6 +19,7 @@ #include #include #include +#include #include #include #include @@ -85,6 +86,7 @@ struct roffnode { struct rofftree { struct roffnode *last; /* Last parsed node. */ time_t date; /* `Dd' results. */ + char *cur; char os[64]; /* `Os' results. */ char title[64]; /* `Dt' results. */ char section[64]; /* `Dt' results. */ @@ -115,6 +117,11 @@ static int roff_special(ROFFCALL_ARGS); static struct roffnode *roffnode_new(int, struct rofftree *); static void roffnode_free(int, struct rofftree *); +static void roff_warn(const struct rofftree *, + const char *, char *, ...); +static void roff_err(const struct rofftree *, + const char *, char *, ...); + static int roffscan(int, const int *); static int rofffindtok(const char *); static int rofffindarg(const char *); @@ -122,7 +129,8 @@ static int rofffindcallable(const char *); static int roffargs(const struct rofftree *, int, char *, char **); static int roffargok(int, int); -static int roffnextopt(int, const char ***, char **); +static int roffnextopt(const struct rofftree *, + int, const char ***, char **); static int roffparse(struct rofftree *, char *, size_t); static int textparse(const struct rofftree *, const char *, size_t); @@ -131,13 +139,15 @@ static int textparse(const struct rofftree *, static const int roffarg_An[] = { ROFF_Split, ROFF_Nosplit, ROFF_ARGMAX }; static const int roffarg_Bd[] = { ROFF_Ragged, ROFF_Unfilled, - ROFF_Literal, ROFF_File, ROFF_Offset, ROFF_ARGMAX }; + ROFF_Literal, ROFF_File, ROFF_Offset, ROFF_Filled, + ROFF_Compact, ROFF_ARGMAX }; +static const int roffarg_Bk[] = { ROFF_Words, ROFF_ARGMAX }; static const int roffarg_Ex[] = { ROFF_Std, ROFF_ARGMAX }; static const int roffarg_Rv[] = { ROFF_Std, ROFF_ARGMAX }; static const int roffarg_Bl[] = { ROFF_Bullet, ROFF_Dash, ROFF_Hyphen, ROFF_Item, ROFF_Enum, ROFF_Tag, ROFF_Diag, ROFF_Hang, ROFF_Ohang, ROFF_Inset, ROFF_Column, ROFF_Offset, - ROFF_ARGMAX }; + ROFF_Width, ROFF_Compact, ROFF_ARGMAX }; static const int roffarg_St[] = { ROFF_p1003_1_88, ROFF_p1003_1_90, ROFF_p1003_1_96, ROFF_p1003_1_2001, ROFF_p1003_1_2004, ROFF_p1003_1, @@ -165,7 +175,8 @@ static const int roffparent_It[] = { ROFF_Bl, ROFF_It, static const int roffparent_Re[] = { ROFF_Rs, ROFF_MAX }; /* Table of all known tokens. */ -static const struct rofftok tokens[ROFF_MAX] = { +static const struct rofftok tokens[ROFF_MAX] = + { {roff_comment, NULL, NULL, NULL, 0, ROFF_COMMENT, 0 }, /* \" */ { roff_Dd, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* Dd */ { roff_Dt, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* Dt */ @@ -175,7 +186,7 @@ static const struct rofftok tokens[ROFF_MAX] = { { roff_text, NULL, NULL, NULL, ROFF_Pp, ROFF_TEXT, 0 }, /* Pp */ { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED }, /* D1 */ { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED }, /* Dl */ - { roff_layout, NULL, NULL, NULL, 0, ROFF_LAYOUT, 0 }, /* Bd */ + { roff_layout, roffarg_Bd, NULL, NULL, 0, ROFF_LAYOUT, 0 }, /* Bd */ { roff_close, NULL, NULL, NULL, ROFF_Bd, ROFF_LAYOUT, 0 }, /* Ed */ { roff_layout, roffarg_Bl, NULL, roffchild_Bl, 0, ROFF_LAYOUT, 0 }, /* Bl */ { roff_close, NULL, roffparent_El, NULL, ROFF_Bl, ROFF_LAYOUT, 0 }, /* El */ @@ -266,71 +277,29 @@ static const struct rofftok tokens[ROFF_MAX] = { { roff_close, NULL, roffparent_Fc, NULL, ROFF_Fo, ROFF_LAYOUT, 0 }, /* Fc */ { roff_layout, NULL, NULL, NULL, 0, ROFF_LAYOUT, 0 }, /* Oo */ { roff_close, NULL, roffparent_Oc, NULL, ROFF_Oo, ROFF_LAYOUT, 0 }, /* Oc */ - { roff_layout, NULL, NULL, NULL, 0, ROFF_LAYOUT, 0 }, /* Bk */ + { roff_layout, roffarg_Bk, NULL, NULL, 0, ROFF_LAYOUT, 0 }, /* Bk */ { roff_close, NULL, NULL, NULL, ROFF_Bk, ROFF_LAYOUT, 0 }, /* Ek */ -}; + }; /* Table of all known token arguments. */ -static const struct roffarg tokenargs[ROFF_ARGMAX] = { - { 0 }, /* split */ - { 0 }, /* nosplit */ - { 0 }, /* ragged */ - { 0 }, /* unfilled */ - { 0 }, /* literal */ - { ROFF_VALUE }, /* file */ - { ROFF_VALUE }, /* offset */ - { 0 }, /* bullet */ - { 0 }, /* dash */ - { 0 }, /* hyphen */ - { 0 }, /* item */ - { 0 }, /* enum */ - { 0 }, /* tag */ - { 0 }, /* diag */ - { 0 }, /* hang */ - { 0 }, /* ohang */ - { 0 }, /* inset */ - { 0 }, /* column */ - { 0 }, /* width */ - { 0 }, /* compact */ - { 0 }, /* std */ - { 0 }, /* p1003_1_88 */ - { 0 }, /* p1003_1_90 */ - { 0 }, /* p1003_1_96 */ - { 0 }, /* p1003_1_2001 */ - { 0 }, /* p1003_1_2004 */ - { 0 }, /* p1003_1 */ - { 0 }, /* p1003_1b */ - { 0 }, /* p1003_1b_93 */ - { 0 }, /* p1003_1c_95 */ - { 0 }, /* p1003_1g_2000 */ - { 0 }, /* p1003_2_92 */ - { 0 }, /* p1387_2_95 */ - { 0 }, /* p1003_2 */ - { 0 }, /* p1387_2 */ - { 0 }, /* isoC_90 */ - { 0 }, /* isoC_amd1 */ - { 0 }, /* isoC_tcor1 */ - { 0 }, /* isoC_tcor2 */ - { 0 }, /* isoC_99 */ - { 0 }, /* ansiC */ - { 0 }, /* ansiC_89 */ - { 0 }, /* ansiC_99 */ - { 0 }, /* ieee754 */ - { 0 }, /* iso8802_3 */ - { 0 }, /* xpg3 */ - { 0 }, /* xpg4 */ - { 0 }, /* xpg4_2 */ - { 0 }, /* xpg4_3 */ - { 0 }, /* xbd5 */ - { 0 }, /* xcu5 */ - { 0 }, /* xsh5 */ - { 0 }, /* xns5 */ - { 0 }, /* xns5_2d2_0 */ - { 0 }, /* xcurses4_2 */ - { 0 }, /* susv2 */ - { 0 }, /* susv3 */ - { 0 }, /* svid4 */ -}; +static const int tokenargs[ROFF_ARGMAX] = + { + 0, 0, 0, 0, + 0, ROFF_VALUE, ROFF_VALUE, 0, + 0, 0, 0, 0, + 0, 0, 0, 0, + 0, 0, 0, 0, + 0, 0, 0, 0, + 0, 0, 0, 0, + 0, 0, 0, 0, + 0, 0, 0, 0, + 0, 0, 0, 0, + 0, 0, 0, 0, + 0, 0, 0, 0, + 0, 0, 0, 0, + 0, 0, 0, 0, + 0, 0, 0, 0, + }; const char *const toknamesp[ROFF_MAX] = { @@ -383,9 +352,10 @@ const char *const tokargnamesp[ROFF_ARGMAX] = "xpg4.3", "xbd5", "xcu5", "xsh5", "xns5", "xns5.2d2.0", "xcurses4.2", "susv2", "susv3", - "svid4" + "svid4", "filled", "words", }; + const char *const *toknames = toknamesp; const char *const *tokargnames = tokargnamesp; @@ -409,8 +379,7 @@ roff_free(struct rofftree *tree, int flush) error = tree->mbuf ? 0 : 1; if (tree->mbuf && (ROFF_PRELUDE & tree->state)) { - warnx("%s: prelude never finished", - tree->rbuf->name); + /*roff_warn(tree, "prelude never finished");*/ error = 1; } @@ -425,10 +394,8 @@ roff_alloc(const struct md_args *args, struct md_mbuf { struct rofftree *tree; - if (NULL == (tree = calloc(1, sizeof(struct rofftree)))) { - warn("malloc"); - return(NULL); - } + if (NULL == (tree = calloc(1, sizeof(struct rofftree)))) + err(1, "calloc"); tree->state = ROFF_PRELUDE; tree->args = args; @@ -444,10 +411,10 @@ int roff_engine(struct rofftree *tree, char *buf, size_t sz) { + tree->cur = buf; + if (0 == sz) { - warnx("%s: blank line (line %zu)", - tree->rbuf->name, - tree->rbuf->line); + roff_warn(tree, buf, "blank line"); return(0); } else if ('.' != *buf) return(textparse(tree, buf, sz)); @@ -460,20 +427,7 @@ static int textparse(const struct rofftree *tree, const char *buf, size_t sz) { - if (NULL == tree->last) { - warnx("%s: unexpected text (line %zu)", - tree->rbuf->name, - tree->rbuf->line); - return(0); - } else if (NULL == tree->last->parent) { - warnx("%s: disallowed text (line %zu)", - tree->rbuf->name, - tree->rbuf->line); - return(0); - } - /* Print text. */ - return(1); } @@ -483,10 +437,13 @@ roffargs(const struct rofftree *tree, int tok, char *buf, char **argv) { int i; + char *p; assert(tok >= 0 && tok < ROFF_MAX); assert('.' == *buf); + p = buf; + /* LINTED */ for (i = 0; *buf && i < ROFF_MAXARG; i++) { if ('\"' == *buf) { @@ -494,11 +451,10 @@ roffargs(const struct rofftree *tree, while (*buf && '\"' != *buf) buf++; if (0 == *buf) { - warnx("%s: unclosed quoted arg for " - "`%s' (line %zu)", - tree->rbuf->name, - toknames[tok], - tree->rbuf->line); + roff_err(tree, p, argv[i], "unclosed " + "quote in argument " + "list for `%s'", + toknames[tok]); return(0); } } else { @@ -515,17 +471,11 @@ roffargs(const struct rofftree *tree, assert(i > 0); if (ROFF_MAXARG == i && *buf) { - warnx("%s: too many args for `%s' (line %zu)", - tree->rbuf->name, toknames[tok], - tree->rbuf->line); + roff_err(tree, p, p, "too many arguments for `%s'", toknames + [tok]); return(0); } -#ifdef DEBUG - (void)printf("argparse: %d arguments for `%s'\n", - i, toknames[tok]); -#endif - argv[i] = NULL; return(1); } @@ -558,24 +508,22 @@ roffparse(struct rofftree *tree, char *buf, size_t sz) assert(sz > 0); if (ROFF_MAX == (tok = rofffindtok(buf + 1))) { - warnx("%s: unknown line macro (line %zu)", - tree->rbuf->name, tree->rbuf->line); + roff_err(tree, buf + 1, "bogus line macro"); return(0); } else if (NULL == tokens[tok].cb) { - warnx("%s: macro `%s' not supported (line %zu)", - tree->rbuf->name, toknames[tok], - tree->rbuf->line); + roff_err(tree, buf + 1, "unsupported macro `%s'", + toknames[tok]); return(0); } else if (ROFF_COMMENT == tokens[tok].type) return(1); if ( ! roffargs(tree, tok, buf, argv)) return(0); - else - argvp = (const char **)argv + 1; + argvp = (const char **)argv; + /* - * Prelude macros break some assumptions: branch now. + * Prelude macros break some assumptions, so branch now. */ if (ROFF_PRELUDE & tree->state) { @@ -621,7 +569,24 @@ roffparse(struct rofftree *tree, char *buf, size_t sz) if (0 == tokens[tok].ctx) return((*tokens[tok].cb)(tok, tree, argvp, ROFF_ENTER)); + /* + * First consider implicit-end tags, like as follows: + * .Sh SECTION 1 + * .Sh SECTION 2 + * In this, we want to close the scope of the NAME section. If + * there's an intermediary implicit-end tag, such as + * .Sh SECTION 1 + * .Ss Subsection 1 + * .Sh SECTION 2 + * then it must be closed as well. + */ + if (tok == tokens[tok].ctx) { + /* + * First search up to the point where we must close. + * If one doesn't exist, then we can open a new scope. + */ + for (n = tree->last; n; n = n->parent) { assert(0 == tokens[n->tok].ctx || n->tok == tokens[n->tok].ctx); @@ -637,45 +602,38 @@ roffparse(struct rofftree *tree, char *buf, size_t sz) * Create a new scope, as no previous one exists to * close out. */ - if (NULL == n) { -#ifdef DEBUG - (void)printf("scope: new `%s'\n", - toknames[tok]); -#endif + + if (NULL == n) return((*tokens[tok].cb)(tok, tree, argvp, ROFF_ENTER)); - } /* - * Close out all intermediary scoped blocks. + * Close out all intermediary scoped blocks, then hang + * the current scope from our predecessor's parent. */ do { t = tree->last->tok; -#ifdef DEBUG - (void)printf("scope: closing `%s'\n", - toknames[t]); -#endif if ( ! (*tokens[t].cb)(t, tree, NULL, ROFF_EXIT)) return(0); } while (t != tok); -#ifdef DEBUG - (void)printf("scope: new parent of `%s' is `%s'\n", - toknames[tok], - toknames[tree->last->tok]); -#endif - return((*tokens[tok].cb)(tok, tree, argvp, ROFF_ENTER)); } + /* + * Now consider explicit-end tags, where we want to close back + * to a specific tag. Example: + * .Bl + * .It Item. + * .El + * In this, the `El' tag closes out the scope of `Bl'. + */ + assert(tree->last); assert(tok != tokens[tok].ctx && 0 != tokens[tok].ctx); do { t = tree->last->tok; -#ifdef DEBUG - (void)printf("scope: closing `%s'\n", toknames[t]); -#endif if ( ! (*tokens[t].cb)(t, tree, NULL, ROFF_EXIT)) return(0); } while (t != tokens[tok].ctx); @@ -721,18 +679,9 @@ rofffindtok(const char *buf) /* LINTED */ for (i = 0; i < ROFF_MAX; i++) /* LINTED */ - if (0 == strcmp(toknames[i], token)) { -#ifdef DEBUG - (void)printf("lookup (good): `%s' (%d)\n", - token, (int)i); -#endif + if (0 == strcmp(toknames[i], token)) return((int)i); - } -#ifdef DEBUG - (void)printf("lookup (bad): `%s'\n", token); -#endif - return(ROFF_MAX); } @@ -754,24 +703,14 @@ roffnode_new(int tokid, struct rofftree *tree) { struct roffnode *p; - if (NULL == (p = malloc(sizeof(struct roffnode)))) { - warn("malloc"); - return(NULL); - } + if (NULL == (p = malloc(sizeof(struct roffnode)))) + err(1, "malloc"); p->line = tree->rbuf->line; p->tok = tokid; p->parent = tree->last; tree->last = p; -#ifdef DEBUG - (void)printf("scope: new `%s' child of `%s'\n", - toknames[tree->last->tok], - tree->last->parent ? - toknames[tree->last->parent->tok] : - ""); -#endif - return(p); } @@ -800,14 +739,6 @@ roffnode_free(int tokid, struct rofftree *tree) assert(tree->last); assert(tree->last->tok == tokid); -#ifdef DEBUG - (void)printf("scope: closing `%s' back to `%s'\n", - toknames[tree->last->tok], - tree->last->parent ? - toknames[tree->last->parent->tok] : - ""); -#endif - p = tree->last; tree->last = tree->last->parent; free(p); @@ -815,7 +746,8 @@ roffnode_free(int tokid, struct rofftree *tree) static int -roffnextopt(int tok, const char ***in, char **val) +roffnextopt(const struct rofftree *tree, int tok, + const char ***in, char **val) { const char *arg, **argv; int v; @@ -829,23 +761,30 @@ roffnextopt(int tok, const char ***in, char **val) if ('-' != *arg) return(-1); - /* FIXME: should we let this slide... ? */ - - if (ROFF_ARGMAX == (v = rofffindarg(&arg[1]))) + if (ROFF_ARGMAX == (v = rofffindarg(arg + 1))) { + roff_warn(tree, arg, "argument-like parameter `%s' to " + "`%s'", &arg[1], toknames[tok]); return(-1); - - /* FIXME: should we let this slide... ? */ - - if ( ! roffargok(tok, v)) + } + + if ( ! roffargok(tok, v)) { + roff_warn(tree, arg, "invalid argument parameter `%s' to " + "`%s'", tokargnames[v], toknames[tok]); return(-1); - if ( ! (ROFF_VALUE & tokenargs[v].flags)) + } + + if ( ! (ROFF_VALUE & tokenargs[v])) return(v); *in = ++argv; - /* FIXME: what if this looks like a roff token or argument? */ + if (NULL == *argv) { + roff_err(tree, arg, "empty value of `%s' for `%s'", + tokargnames[v], toknames[tok]); + return(ROFF_ARGMAX); + } - return(*argv ? v : ROFF_ARGMAX); + return(v); } @@ -864,12 +803,10 @@ roff_Dd(ROFFCALL_ARGS) assert( ! (ROFF_BODY & tree->state)); if (ROFF_PRELUDE_Dd & tree->state) { - warnx("%s: prelude `Dd' repeated (line %zu)", - tree->rbuf->name, tree->rbuf->line); + roff_err(tree, *argv, "repeated `Dd' in prelude"); return(0); } else if (ROFF_PRELUDE_Dt & tree->state) { - warnx("%s: prelude `Dd' out-of-order (line %zu)", - tree->rbuf->name, tree->rbuf->line); + roff_err(tree, *argv, "out-of-order `Dd' in prelude"); return(0); } @@ -897,12 +834,10 @@ roff_Dt(ROFFCALL_ARGS) assert( ! (ROFF_BODY & tree->state)); if ( ! (ROFF_PRELUDE_Dd & tree->state)) { - warnx("%s: prelude `Dt' out-of-order (line %zu)", - tree->rbuf->name, tree->rbuf->line); + roff_err(tree, *argv, "out-of-order `Dt' in prelude"); return(0); } else if (ROFF_PRELUDE_Dt & tree->state) { - warnx("%s: prelude `Dt' repeated (line %zu)", - tree->rbuf->name, tree->rbuf->line); + roff_err(tree, *argv, "repeated `Dt' in prelude"); return(0); } @@ -932,8 +867,7 @@ roff_Os(ROFFCALL_ARGS) assert(ROFF_PRELUDE & tree->state); if ( ! (ROFF_PRELUDE_Dt & tree->state) || ! (ROFF_PRELUDE_Dd & tree->state)) { - warnx("%s: prelude `Os' out-of-order (line %zu)", - tree->rbuf->name, tree->rbuf->line); + roff_err(tree, *argv, "out-of-order `Os' in prelude"); return(0); } @@ -957,10 +891,8 @@ roff_layout(ROFFCALL_ARGS) char *v, *argvp[ROFF_MAXARG]; if (ROFF_PRELUDE & tree->state) { - warnx("%s: macro `%s' called in prelude (line %zu)", - tree->rbuf->name, - toknames[tok], - tree->rbuf->line); + roff_err(tree, *argv, "`%s' disallowed in prelude", + toknames[tok]); return(0); } @@ -970,22 +902,12 @@ roff_layout(ROFFCALL_ARGS) } i = 0; + argv++; - while (-1 != (c = roffnextopt(tok, &argv, &v))) { - if (ROFF_ARGMAX == c) { - warnx("%s: error parsing `%s' args (line %zu)", - tree->rbuf->name, - toknames[tok], - tree->rbuf->line); + while (-1 != (c = roffnextopt(tree, tok, &argv, &v))) { + if (ROFF_ARGMAX == c) return(0); - } else if ( ! roffargok(tok, c)) { - warnx("%s: arg `%s' not for `%s' (line %zu)", - tree->rbuf->name, - tokargnames[c], - toknames[tok], - tree->rbuf->line); - return(0); - } + argcp[i] = c; argvp[i] = v; i++; @@ -1002,6 +924,7 @@ roff_layout(ROFFCALL_ARGS) return(0); if ( ! (ROFF_PARSED & tokens[tok].flags)) { + /* TODO: print all tokens. */ if ( ! ((*tree->cb->roffout)(tok))) @@ -1012,18 +935,18 @@ roff_layout(ROFFCALL_ARGS) while (*argv) { if (ROFF_MAX != (c = rofffindcallable(*argv))) { if (NULL == tokens[c].cb) { - warnx("%s: macro `%s' not supported " - "(line %zu)", - tree->rbuf->name, - toknames[c], - tree->rbuf->line); + roff_err(tree, *argv, "unsupported " + "macro `%s'", + toknames[c]); return(0); } if ( ! (*tokens[c].cb)(c, tree, - argv + 1, ROFF_ENTER)) + argv, ROFF_ENTER)) return(0); } + /* TODO: print token. */ + argv++; } @@ -1042,23 +965,18 @@ roff_text(ROFFCALL_ARGS) char *v, *argvp[ROFF_MAXARG]; if (ROFF_PRELUDE & tree->state) { - warnx("%s: macro `%s' called in prelude (line %zu)", - tree->rbuf->name, - toknames[tok], - tree->rbuf->line); + roff_err(tree, *argv, "`%s' disallowed in prelude", + toknames[tok]); return(0); } i = 0; + argv++; - while (-1 != (c = roffnextopt(tok, &argv, &v))) { - if (ROFF_ARGMAX == c) { - warnx("%s: error parsing `%s' args (line %zu)", - tree->rbuf->name, - toknames[tok], - tree->rbuf->line); + while (-1 != (c = roffnextopt(tree, tok, &argv, &v))) { + if (ROFF_ARGMAX == c) return(0); - } + argcp[i] = c; argvp[i] = v; i++; @@ -1072,25 +990,27 @@ roff_text(ROFFCALL_ARGS) return(0); if ( ! (ROFF_PARSED & tokens[tok].flags)) { + /* TODO: print all tokens. */ + return((*tree->cb->roffout)(tok)); } while (*argv) { if (ROFF_MAX != (c = rofffindcallable(*argv))) { if (NULL == tokens[c].cb) { - warnx("%s: macro `%s' not supported " - "(line %zu)", - tree->rbuf->name, - toknames[c], - tree->rbuf->line); + roff_err(tree, *argv, "unsupported " + "macro `%s'", + toknames[c]); return(0); } if ( ! (*tokens[c].cb)(c, tree, - argv + 1, ROFF_ENTER)) + argv, ROFF_ENTER)) return(0); } + /* TODO: print token. */ + argv++; } @@ -1122,4 +1042,34 @@ roff_special(ROFFCALL_ARGS) { return((*tree->cb->roffspecial)(tok)); +} + + +static void +roff_warn(const struct rofftree *tree, const char *pos, char *fmt, ...) +{ + va_list ap; + char buf[128]; + + va_start(ap, fmt); + (void)vsnprintf(buf, sizeof(buf), fmt, ap); + va_end(ap); + + (*tree->cb->roffmsg)(tree->args, ROFF_WARN, tree->cur, pos, + tree->rbuf->name, tree->rbuf->line, buf); +} + + +static void +roff_err(const struct rofftree *tree, const char *pos, char *fmt, ...) +{ + va_list ap; + char buf[128]; + + va_start(ap, fmt); + (void)vsnprintf(buf, sizeof(buf), fmt, ap); + va_end(ap); + + (*tree->cb->roffmsg)(tree->args, ROFF_ERROR, tree->cur, pos, + tree->rbuf->name, tree->rbuf->line, buf); }