diff options
Diffstat (limited to 'usr.bin/sed/compile.c')
| -rw-r--r-- | usr.bin/sed/compile.c | 26 |
1 files changed, 14 insertions, 12 deletions
diff --git a/usr.bin/sed/compile.c b/usr.bin/sed/compile.c index 53e2af7..cea8e07 100644 --- a/usr.bin/sed/compile.c +++ b/usr.bin/sed/compile.c @@ -66,7 +66,7 @@ static struct labhash { static char *compile_addr(char *, struct s_addr *); static char *compile_ccl(char **, char *); -static char *compile_delimited(char *, char *); +static char *compile_delimited(char *, char *, int); static char *compile_flags(char *, struct s_subst *); static regex_t *compile_re(char *, int); static char *compile_subst(char *, struct s_subst *); @@ -320,7 +320,7 @@ nonsel: /* Now parse the command */ linenum, fname); if ((cmd->u.s = calloc(1, sizeof(struct s_subst))) == NULL) err(1, "malloc"); - p = compile_delimited(p, re); + p = compile_delimited(p, re, 0); if (p == NULL) errx(1, "%lu: %s: unterminated substitute pattern", linenum, fname); @@ -373,7 +373,7 @@ nonsel: /* Now parse the command */ * with the processed string. */ static char * -compile_delimited(char *p, char *d) +compile_delimited(char *p, char *d, int is_tr) { char c; @@ -387,7 +387,7 @@ compile_delimited(char *p, char *d) errx(1, "%lu: %s: newline can not be used as a string delimiter", linenum, fname); while (*p) { - if (*p == '[') { + if (*p == '[' && *p != c) { if ((d = compile_ccl(&p, d)) == NULL) errx(1, "%lu: %s: unbalanced brackets ([])", linenum, fname); continue; @@ -399,9 +399,12 @@ compile_delimited(char *p, char *d) *d++ = '\n'; p += 2; continue; - } else if (*p == '\\' && p[1] == '\\') - *d++ = *p++; - else if (*p == c) { + } else if (*p == '\\' && p[1] == '\\') { + if (is_tr) + p++; + else + *d++ = *p++; + } else if (*p == c) { *d = '\0'; return (p + 1); } @@ -429,8 +432,7 @@ compile_ccl(char **sp, char *t) for (c = *s; (*t = *s) != ']' || c != d; s++, t++) if ((c = *s) == '\0') return NULL; - } else if (*s == '\\' && s[1] == 'n') - *t = '\n', s++; + } return (*s == ']') ? *sp = ++s, ++t : NULL; } @@ -654,11 +656,11 @@ compile_tr(char *p, struct s_tr **py) errx(1, "%lu: %s: transform pattern can not be delimited by newline or backslash", linenum, fname); - p = compile_delimited(p, old); + p = compile_delimited(p, old, 1); if (p == NULL) errx(1, "%lu: %s: unterminated transform source string", linenum, fname); - p = compile_delimited(p - 1, new); + p = compile_delimited(p - 1, new, 1); if (p == NULL) errx(1, "%lu: %s: unterminated transform target string", linenum, fname); @@ -781,7 +783,7 @@ compile_addr(char *p, struct s_addr *a) ++p; /* FALLTHROUGH */ case '/': /* Context address */ - p = compile_delimited(p, re); + p = compile_delimited(p, re, 0); if (p == NULL) errx(1, "%lu: %s: unterminated regular expression", linenum, fname); /* Check for case insensitive regexp flag */ |
