/* Used by built-in utilities to prefix shell and utility name to message
* (also unwinds environments for special builtins).
*/
void
bi_errorf(const char *fmt, ...)
{
va_list va;
shl_stdout_ok = 0; /* debugging: note that stdout not valid */
exstat = 1;
if (fmt != NULL && *fmt != '\0') {
error_prefix(true);
/* not set when main() calls parse_args() */
if (builtin_argv0)
shf_fprintf(shl_out, "%s: ", builtin_argv0);
va_start(va, fmt);
shf_vfprintf(shl_out, fmt, va);
va_end(va);
shf_putchar('\n', shl_out);
}
shf_flush(shl_out);
/* POSIX special builtins and ksh special builtins cause
* non-interactive shells to exit.
* XXX odd use of KEEPASN; also may not want LERROR here
*/
if ((builtin_flag & SPEC_BI) ||
(Flag(FPOSIX) && (builtin_flag & KEEPASN))) {
builtin_argv0 = NULL;
unwind(LERROR);
}
}
void
set_prompt(int to, Source *s)
{
cur_prompt = (uint8_t)to;
switch (to) {
/* command */
case PS1:
/*
* Substitute ! and !! here, before substitutions are done
* so ! in expanded variables are not expanded.
* NOTE: this is not what AT&T ksh does (it does it after
* substitutions, POSIX doesn't say which is to be done.
*/
{
struct shf *shf;
char * volatile ps1;
Area *saved_atemp;
int saved_lineno;
ps1 = str_val(global("PS1"));
shf = shf_sopen(NULL, strlen(ps1) * 2,
SHF_WR | SHF_DYNAMIC, NULL);
while (*ps1)
if (*ps1 != '!' || *++ps1 == '!')
shf_putchar(*ps1++, shf);
else
shf_fprintf(shf, "%lu", s ?
(unsigned long)s->line + 1 : 0UL);
ps1 = shf_sclose(shf);
saved_lineno = current_lineno;
if (s)
current_lineno = s->line + 1;
saved_atemp = ATEMP;
newenv(E_ERRH);
if (kshsetjmp(e->jbuf)) {
prompt = safe_prompt;
/*
* Don't print an error - assume it has already
* been printed. Reason is we may have forked
* to run a command and the child may be
* unwinding its stack through this code as it
* exits.
*/
} else {
char *cp = substitute(ps1, 0);
strdupx(prompt, cp, saved_atemp);
}
current_lineno = saved_lineno;
quitenv(NULL);
}
break;
/* command continuation */
case PS2:
prompt = str_val(global("PS2"));
break;
}
}
/* like errorf(), but no unwind is done */
void
warningf(bool show_lineno, const char *fmt, ...)
{
va_list va;
error_prefix(show_lineno);
va_start(va, fmt);
shf_vfprintf(shl_out, fmt, va);
va_end(va);
shf_putchar('\n', shl_out);
shf_flush(shl_out);
}
/* Print things in columns and rows - func() is called to format the ith
* element
*/
void
print_columns(struct shf *shf, int n, char *(*func) (void *, int, char *, int),
void *arg, int max_width, int prefcol)
{
char *str = (char *) alloc(max_width + 1, ATEMP);
int i;
int r, c;
int rows, cols;
int nspace;
int col_width;
/* max_width + 1 for the space. Note that no space
* is printed after the last column to avoid problems
* with terminals that have auto-wrap.
*/
cols = x_cols / (max_width + 1);
if (!cols)
cols = 1;
rows = (n + cols - 1) / cols;
if (prefcol && n && cols > rows) {
int tmp = rows;
rows = cols;
cols = tmp;
if (rows > n)
rows = n;
}
col_width = max_width;
if (cols == 1)
col_width = 0; /* Don't pad entries in single column output. */
nspace = (x_cols - max_width * cols) / cols;
if (nspace <= 0)
nspace = 1;
for (r = 0; r < rows; r++) {
for (c = 0; c < cols; c++) {
i = c * rows + r;
if (i < n) {
shf_fprintf(shf, "%-*s",
col_width,
(*func)(arg, i, str, max_width + 1));
if (c + 1 < cols)
shf_fprintf(shf, "%*s", nspace, null);
}
}
shf_putchar('\n', shf);
}
afree(str, ATEMP);
}
/* Called when something that shouldn't happen does */
void
internal_errorf(int jump, const char *fmt, ...)
{
va_list va;
error_prefix(true);
shf_fprintf(shl_out, "internal error: ");
va_start(va, fmt);
shf_vfprintf(shl_out, fmt, va);
va_end(va);
shf_putchar('\n', shl_out);
shf_flush(shl_out);
if (jump)
unwind(LERROR);
}
/* A shell error occurred (eg, syntax error, etc.) */
void
errorf(const char *fmt, ...)
{
va_list va;
shl_stdout_ok = 0; /* debugging: note that stdout not valid */
exstat = 1;
if (fmt != NULL && *fmt != '\0') {
error_prefix(true);
va_start(va, fmt);
shf_vfprintf(shl_out, fmt, va);
va_end(va);
shf_putchar('\n', shl_out);
}
shf_flush(shl_out);
unwind(LERROR);
}
static void
vwarningf(unsigned int flags, const char *fmt, va_list ap)
{
if (fmt) {
if (flags & VWARNINGF_INTERNAL)
shf_fprintf(shl_out, Tf_sD_, "internal error");
if (flags & VWARNINGF_ERRORPREFIX)
error_prefix(tobool(flags & VWARNINGF_FILELINE));
if ((flags & VWARNINGF_BUILTIN) &&
/* not set when main() calls parse_args() */
builtin_argv0 && builtin_argv0 != kshname)
shf_fprintf(shl_out, Tf_sD_, builtin_argv0);
shf_vfprintf(shl_out, fmt, ap);
shf_putchar('\n', shl_out);
}
shf_flush(shl_out);
}
/* variant of fputs for ptreef and wdstrip */
static const char *
wdvarput(struct shf *shf, const char *wp, int quotelevel, int opmode)
{
int c;
const char *cs;
/*-
* problems:
* `...` -> $(...)
* 'foo' -> "foo"
* x${foo:-"hi"} -> x${foo:-hi} unless WDS_TPUTS
* x${foo:-'hi'} -> x${foo:-hi} unless WDS_KEEPQ
* could change encoding to:
* OQUOTE ["'] ... CQUOTE ["']
* COMSUB [(`] ...\0 (handle $ ` \ and maybe " in `...` case)
*/
while (/* CONSTCOND */ 1)
switch (*wp++) {
case EOS:
return (--wp);
case ADELIM:
case CHAR:
c = *wp++;
if ((opmode & WDS_MAGIC) &&
(ISMAGIC(c) || c == '[' || c == '!' ||
c == '-' || c == ']' || c == '*' || c == '?'))
shf_putc(MAGIC, shf);
shf_putc(c, shf);
break;
case QCHAR: {
bool doq;
c = *wp++;
doq = (c == '"' || c == '`' || c == '$' || c == '\\');
if (opmode & WDS_TPUTS) {
if (quotelevel == 0)
doq = true;
} else {
if (!(opmode & WDS_KEEPQ))
doq = false;
}
if (doq)
shf_putc('\\', shf);
shf_putc(c, shf);
break;
}
case COMSUB:
shf_puts("$(", shf);
cs = ")";
pSUB:
while ((c = *wp++) != 0)
shf_putc(c, shf);
shf_puts(cs, shf);
break;
case FUNSUB:
c = ' ';
if (0)
/* FALLTHROUGH */
case VALSUB:
c = '|';
shf_putc('$', shf);
shf_putc('{', shf);
shf_putc(c, shf);
cs = ";}";
goto pSUB;
case EXPRSUB:
shf_puts("$((", shf);
cs = "))";
goto pSUB;
case OQUOTE:
if (opmode & WDS_TPUTS) {
quotelevel++;
shf_putc('"', shf);
}
break;
case CQUOTE:
if (opmode & WDS_TPUTS) {
if (quotelevel)
quotelevel--;
shf_putc('"', shf);
}
break;
case OSUBST:
shf_putc('$', shf);
if (*wp++ == '{')
shf_putc('{', shf);
while ((c = *wp++) != 0)
shf_putc(c, shf);
wp = wdvarput(shf, wp, 0, opmode);
break;
case CSUBST:
if (*wp++ == '}')
shf_putc('}', shf);
return (wp);
case OPAT:
if (opmode & WDS_MAGIC) {
shf_putc(MAGIC, shf);
shf_putchar(*wp++ | 0x80, shf);
} else {
shf_putchar(*wp++, shf);
shf_putc('(', shf);
}
break;
case SPAT:
c = '|';
if (0)
case CPAT:
c = /*(*/ ')';
if (opmode & WDS_MAGIC)
shf_putc(MAGIC, shf);
shf_putc(c, shf);
break;
}
}
/* execute tree in child subprocess */
int
exchild(struct op *t, int flags, volatile int *xerrok,
int close_fd) /* used if XPCLOSE or XCCLOSE */
{
static Proc *last_proc; /* for pipelines */
int i;
sigset_t omask;
Proc *p;
Job *j;
int rv = 0;
int forksleep;
int ischild;
if (flags & XEXEC)
/* Clear XFORK|XPCLOSE|XCCLOSE|XCOPROC|XPIPEO|XPIPEI|XXCOM|XBGND
* (also done in another execute() below)
*/
return execute(t, flags & (XEXEC | XERROK), xerrok);
/* no SIGCHLD's while messing with job and process lists */
sigprocmask(SIG_BLOCK, &sm_sigchld, &omask);
p = new_proc();
p->next = (Proc *) 0;
p->state = PRUNNING;
p->status = 0;
p->pid = 0;
/* link process into jobs list */
if (flags&XPIPEI) { /* continuing with a pipe */
if (!last_job)
internal_errorf(1,
"exchild: XPIPEI and no last_job - pid %d",
(int) procpid);
j = last_job;
last_proc->next = p;
last_proc = p;
} else {
j = new_job(); /* fills in j->job */
/* we don't consider XXCOM's foreground since they don't get
* tty process group and we don't save or restore tty modes.
*/
j->flags = (flags & XXCOM) ? JF_XXCOM :
((flags & XBGND) ? 0 : (JF_FG|JF_USETTYMODE));
timerclear(&j->usrtime);
timerclear(&j->systime);
j->state = PRUNNING;
j->pgrp = 0;
j->ppid = procpid;
j->age = ++njobs;
j->proc_list = p;
j->coproc_id = 0;
last_job = j;
last_proc = p;
put_job(j, PJ_PAST_STOPPED);
}
snptreef(p->command, sizeof(p->command), "%T", t);
/* create child process */
forksleep = 1;
while ((i = fork()) < 0 && errno == EAGAIN && forksleep < 32) {
if (intrsig) /* allow user to ^C out... */
break;
sleep(forksleep);
forksleep <<= 1;
}
if (i < 0) {
kill_job(j, SIGKILL);
remove_job(j, "fork failed");
sigprocmask(SIG_SETMASK, &omask, (sigset_t *) 0);
errorf("cannot fork - try again");
}
ischild = i == 0;
if (ischild)
p->pid = procpid = getpid();
else
p->pid = i;
#ifdef JOBS
/* job control set up */
if (Flag(FMONITOR) && !(flags&XXCOM)) {
int dotty = 0;
if (j->pgrp == 0) { /* First process */
j->pgrp = p->pid;
dotty = 1;
}
/* set pgrp in both parent and child to deal with race
* condition
*/
setpgid(p->pid, j->pgrp);
/* YYY: should this be
if (ttypgrp_ok && ischild && !(flags&XBGND))
tcsetpgrp(tty_fd, j->pgrp);
instead? (see also YYY below)
*/
if (ttypgrp_ok && dotty && !(flags & XBGND))
tcsetpgrp(tty_fd, j->pgrp);
}
#endif /* JOBS */
/* used to close pipe input fd */
if (close_fd >= 0 && (((flags & XPCLOSE) && !ischild) ||
((flags & XCCLOSE) && ischild)))
close(close_fd);
if (ischild) { /* child */
/* Do this before restoring signal */
if (flags & XCOPROC)
coproc_cleanup(false);
sigprocmask(SIG_SETMASK, &omask, (sigset_t *) 0);
cleanup_parents_env();
#ifdef JOBS
/* If FMONITOR or FTALKING is set, these signals are ignored,
* if neither FMONITOR nor FTALKING are set, the signals have
* their inherited values.
*/
if (Flag(FMONITOR) && !(flags & XXCOM)) {
for (i = NELEM(tt_sigs); --i >= 0; )
setsig(&sigtraps[tt_sigs[i]], SIG_DFL,
SS_RESTORE_DFL|SS_FORCE);
}
#endif /* JOBS */
if (Flag(FBGNICE) && (flags & XBGND))
nice(4);
if ((flags & XBGND) && !Flag(FMONITOR)) {
setsig(&sigtraps[SIGINT], SIG_IGN,
SS_RESTORE_IGN|SS_FORCE);
setsig(&sigtraps[SIGQUIT], SIG_IGN,
SS_RESTORE_IGN|SS_FORCE);
if (!(flags & (XPIPEI | XCOPROC))) {
int fd = open("/dev/null", 0);
if (fd != 0) {
(void) ksh_dup2(fd, 0, true);
close(fd);
}
}
}
remove_job(j, "child"); /* in case of `jobs` command */
nzombie = 0;
#ifdef JOBS
ttypgrp_ok = 0;
Flag(FMONITOR) = 0;
#endif /* JOBS */
Flag(FTALKING) = 0;
tty_close();
cleartraps();
execute(t, (flags & XERROK) | XEXEC, NULL); /* no return */
internal_errorf(0, "exchild: execute() returned");
unwind(LLEAVE);
/* NOTREACHED */
}
/* shell (parent) stuff */
/* Ensure next child gets a (slightly) different $RANDOM sequence */
change_random();
if (!(flags & XPIPEO)) { /* last process in a job */
#ifdef JOBS
/* YYY: Is this needed? (see also YYY above)
if (Flag(FMONITOR) && !(flags&(XXCOM|XBGND)))
tcsetpgrp(tty_fd, j->pgrp);
*/
#endif /* JOBS */
j_startjob(j);
if (flags & XCOPROC) {
j->coproc_id = coproc.id;
coproc.njobs++; /* n jobs using co-process output */
coproc.job = (void *) j; /* j using co-process input */
}
if (flags & XBGND) {
j_set_async(j);
if (Flag(FTALKING)) {
shf_fprintf(shl_out, "[%d]", j->job);
for (p = j->proc_list; p; p = p->next)
shf_fprintf(shl_out, " %d", p->pid);
shf_putchar('\n', shl_out);
shf_flush(shl_out);
}
} else
rv = j_waitj(j, JW_NONE, "jw:last proc");
}
sigprocmask(SIG_SETMASK, &omask, (sigset_t *) 0);
return rv;
}
int
exchild(struct op *t, int flags,
int close_fd) /* used if XPCLOSE or XCCLOSE */
{
static Proc *last_proc; /* for pipelines */
int i;
sigset_t omask;
Proc *p;
Job *j;
int rv = 0;
int forksleep;
int ischild;
if (flags & XEXEC)
/* Clear XFORK|XPCLOSE|XCCLOSE|XCOPROC|XPIPEO|XPIPEI|XXCOM|XBGND
* (also done in another execute() below)
*/
return execute(t, flags & (XEXEC | XERROK));
p = new_proc();
p->next = (Proc *) 0;
p->state = PRUNNING;
p->status = 0;
p->pid = 0;
/* link process into jobs list */
if (flags&XPIPEI) { /* continuing with a pipe */
if (!last_job)
internal_errorf(1,
"exchild: XPIPEI and no last_job - pid %d",
(int) procpid);
j = last_job;
last_proc->next = p;
last_proc = p;
} else {
j = new_job(); /* fills in j->job */
/* we don't consider XXCOM's foreground since they don't get
* tty process group and we don't save or restore tty modes.
*/
j->flags = (flags & XXCOM) ? JF_XXCOM :
((flags & XBGND) ? 0 : (JF_FG|JF_USETTYMODE));
j->usrtime = j->systime = 0;
j->state = PRUNNING;
j->pgrp = 0;
j->ppid = procpid;
j->age = ++njobs;
j->proc_list = p;
j->coproc_id = 0;
last_job = j;
last_proc = p;
put_job(j, PJ_PAST_STOPPED);
}
snptreef(p->command, sizeof(p->command), "%T", t);
/* create child process */
forksleep = 1;
while ((i = fork()) < 0 && errno == EAGAIN && forksleep < 32) {
if (intrsig) /* allow user to ^C out... */
break;
sleep(forksleep);
forksleep <<= 1;
}
if (i < 0) {
kill_job(j, SIGKILL);
remove_job(j, "fork failed");
sigprocmask(SIG_SETMASK, &omask, (sigset_t *) 0);
errorf("cannot fork - try again");
}
ischild = i == 0;
if (ischild)
p->pid = procpid = getpid();
else
p->pid = i;
/* used to close pipe input fd */
if (close_fd >= 0 && (((flags & XPCLOSE) && !ischild) ||
((flags & XCCLOSE) && ischild)))
close(close_fd);
if (ischild) { /* child */
/* Do this before restoring signal */
if (flags & XCOPROC)
coproc_cleanup(false);
sigprocmask(SIG_SETMASK, &omask, (sigset_t *) 0);
cleanup_parents_env();
if ((flags & XBGND)) {
setsig(&sigtraps[SIGINT], SIG_IGN,
SS_RESTORE_IGN|SS_FORCE);
setsig(&sigtraps[SIGQUIT], SIG_IGN,
SS_RESTORE_IGN|SS_FORCE);
if (!(flags & (XPIPEI | XCOPROC))) {
int fd = open("/dev/null", 0);
if (fd != 0) {
(void) ksh_dup2(fd, 0, true);
close(fd);
}
}
}
remove_job(j, "child"); /* in case of `jobs` command */
nzombie = 0;
Flag(FTALKING) = 0;
tty_close();
cleartraps();
execute(t, (flags & XERROK) | XEXEC); /* no return */
internal_errorf(0, "exchild: execute() returned");
unwind(LLEAVE);
/* NOTREACHED */
}
/* shell (parent) stuff */
/* Ensure next child gets a (slightly) different $RANDOM sequence */
change_random();
if (!(flags & XPIPEO)) { /* last process in a job */
j_startjob(j);
if (flags & XCOPROC) {
j->coproc_id = coproc.id;
coproc.njobs++; /* n jobs using co-process output */
coproc.job = (void *) j; /* j using co-process input */
}
if (flags & XBGND) {
j_set_async(j);
if (Flag(FTALKING)) {
shf_fprintf(shl_out, "[%d]", j->job);
for (p = j->proc_list; p; p = p->next)
shf_fprintf(shl_out, " %d", p->pid);
shf_putchar('\n', shl_out);
shf_flush(shl_out);
}
} else
rv = j_waitj(j, JW_NONE, "jw:last proc");
}
sigprocmask(SIG_SETMASK, &omask, (sigset_t *) 0);
return rv;
}
/*
* Print things in columns and rows - func() is called to format
* the i-th element
*/
void
print_columns(struct shf *shf, int n,
char *(*func)(char *, int, int, const void *),
const void *arg, int max_oct, int max_col, bool prefcol)
{
int i, r, c, rows, cols, nspace;
char *str;
if (n <= 0) {
#ifndef MKSH_SMALL
internal_warningf("print_columns called with n=%d <= 0", n);
#endif
return;
}
++max_oct;
str = alloc(max_oct, ATEMP);
/* ensure x_cols is valid first */
if (x_cols < MIN_COLS)
change_winsz();
/*
* We use (max_col + 1) to consider the space separator.
* Note that no space is printed after the last column
* to avoid problems with terminals that have auto-wrap.
*/
cols = x_cols / (max_col + 1);
/* if we can only print one column anyway, skip the goo */
if (cols < 2) {
for (i = 0; i < n; ++i)
shf_fprintf(shf, "%s \n",
(*func)(str, max_oct, i, arg));
goto out;
}
rows = (n + cols - 1) / cols;
if (prefcol && cols > rows) {
i = rows;
rows = cols > n ? n : cols;
cols = i;
}
max_col = -max_col;
nspace = (x_cols + max_col * cols) / cols;
if (nspace <= 0)
nspace = 1;
for (r = 0; r < rows; r++) {
for (c = 0; c < cols; c++) {
i = c * rows + r;
if (i < n) {
shf_fprintf(shf, "%*s", max_col,
(*func)(str, max_oct, i, arg));
if (c + 1 < cols)
shf_fprintf(shf, "%*s", nspace, null);
}
}
shf_putchar('\n', shf);
}
out:
afree(str, ATEMP);
}
/*
* Print things in columns and rows - func() is called to format
* the i-th element
*/
void
print_columns(struct shf *shf, unsigned int n,
void (*func)(char *, size_t, unsigned int, const void *),
const void *arg, size_t max_oct, size_t max_colz, bool prefcol)
{
unsigned int i, r, c, rows, cols, nspace, max_col;
char *str;
if (!n)
return;
if (max_colz > 2147483646) {
#ifndef MKSH_SMALL
internal_warningf("print_columns called with %s=%zu >= INT_MAX",
"max_col", max_colz);
#endif
return;
}
max_col = (unsigned int)max_colz;
if (max_oct > 2147483646) {
#ifndef MKSH_SMALL
internal_warningf("print_columns called with %s=%zu >= INT_MAX",
"max_oct", max_oct);
#endif
return;
}
++max_oct;
str = alloc(max_oct, ATEMP);
/*
* We use (max_col + 2) to consider the separator space.
* Note that no spaces are printed after the last column
* to avoid problems with terminals that have auto-wrap,
* but we need to also take this into account in x_cols.
*/
cols = (x_cols + 1) / (max_col + 2);
/* if we can only print one column anyway, skip the goo */
if (cols < 2) {
for (i = 0; i < n; ++i) {
(*func)(str, max_oct, i, arg);
shf_puts(str, shf);
shf_putc('\n', shf);
}
goto out;
}
rows = (n + cols - 1) / cols;
if (prefcol && cols > rows) {
cols = rows;
rows = (n + cols - 1) / cols;
}
nspace = (x_cols - max_col * cols) / cols;
if (nspace < 2)
nspace = 2;
max_col = -max_col;
for (r = 0; r < rows; r++) {
for (c = 0; c < cols; c++) {
if ((i = c * rows + r) >= n)
break;
(*func)(str, max_oct, i, arg);
if (i + rows >= n)
shf_puts(str, shf);
else
shf_fprintf(shf, "%*s%*s",
max_col, str, nspace, null);
}
shf_putchar('\n', shf);
}
out:
afree(str, ATEMP);
}
/* variant of fputs for ptreef and wdstrip */
static const char *
wdvarput(struct shf *shf, const char *wp, int quotelevel, int opmode)
{
int c;
const char *cs;
/*-
* problems:
* `...` -> $(...)
* 'foo' -> "foo"
* x${foo:-"hi"} -> x${foo:-hi} unless WDS_TPUTS
* x${foo:-'hi'} -> x${foo:-hi}
* could change encoding to:
* OQUOTE ["'] ... CQUOTE ["']
* COMSUB [(`] ...\0 (handle $ ` \ and maybe " in `...` case)
*/
while (/* CONSTCOND */ 1)
switch (*wp++) {
case EOS:
return (--wp);
case ADELIM:
if (ord(*wp) == ORD(/*{*/ '}')) {
++wp;
goto wdvarput_csubst;
}
/* FALLTHROUGH */
case CHAR:
c = ord(*wp++);
shf_putc(c, shf);
break;
case QCHAR:
c = ord(*wp++);
if (opmode & WDS_TPUTS)
switch (c) {
case ORD('\n'):
if (quotelevel == 0) {
c = ORD('\'');
shf_putc(c, shf);
shf_putc(ORD('\n'), shf);
}
break;
default:
if (quotelevel == 0)
/* FALLTHROUGH */
case ORD('"'):
case ORD('`'):
case ORD('$'):
case ORD('\\'):
shf_putc(ORD('\\'), shf);
break;
}
shf_putc(c, shf);
break;
case COMASUB:
case COMSUB:
shf_puts("$(", shf);
cs = ")";
if (ord(*wp) == ORD('(' /*)*/))
shf_putc(' ', shf);
pSUB:
while ((c = *wp++) != 0)
shf_putc(c, shf);
shf_puts(cs, shf);
break;
case FUNASUB:
case FUNSUB:
c = ORD(' ');
if (0)
/* FALLTHROUGH */
case VALSUB:
c = ORD('|');
shf_putc('$', shf);
shf_putc('{', shf);
shf_putc(c, shf);
cs = ";}";
goto pSUB;
case EXPRSUB:
shf_puts("$((", shf);
cs = "))";
goto pSUB;
case OQUOTE:
if (opmode & WDS_TPUTS) {
quotelevel++;
shf_putc('"', shf);
}
break;
case CQUOTE:
if (opmode & WDS_TPUTS) {
if (quotelevel)
quotelevel--;
shf_putc('"', shf);
}
break;
case OSUBST:
shf_putc('$', shf);
if (ord(*wp++) == ORD('{'))
shf_putc('{', shf);
while ((c = *wp++) != 0)
shf_putc(c, shf);
wp = wdvarput(shf, wp, 0, opmode);
break;
case CSUBST:
if (ord(*wp++) == ORD('}')) {
wdvarput_csubst:
shf_putc('}', shf);
}
return (wp);
case OPAT:
shf_putchar(*wp++, shf);
shf_putc('(', shf);
break;
case SPAT:
c = ORD('|');
if (0)
/* FALLTHROUGH */
case CPAT:
c = ORD(/*(*/ ')');
shf_putc(c, shf);
break;
}
}