diff options
Diffstat (limited to 'regparse.c')
| -rw-r--r-- | regparse.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/regparse.c b/regparse.c index 9295e1d5ab..b9667c6f67 100644 --- a/regparse.c +++ b/regparse.c @@ -2115,6 +2115,8 @@ or_cclass(CClassNode* dest, CClassNode* cc, ScanEnv* env) return 0; } +static void UNKNOWN_ESC_WARN(ScanEnv *env, int c); + static int conv_backslash_value(int c, ScanEnv* env) { @@ -2133,6 +2135,8 @@ conv_backslash_value(int c, ScanEnv* env) break; default: + if (('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z')) + UNKNOWN_ESC_WARN(env, c); break; } } @@ -2885,6 +2889,22 @@ CC_DUP_WARN(ScanEnv *env) } } +static void +UNKNOWN_ESC_WARN(ScanEnv *env, int c) +{ + UChar buf[WARN_BUFSIZE]; + if (onig_warn == onig_null_warn || !RTEST(ruby_verbose)) return ; + + onig_snprintf_with_pattern(buf, WARN_BUFSIZE, env->enc, + env->pattern, env->pattern_end, + (UChar* )"Unknown escape \\%c is ignored", c); + + if (env->sourcefile == NULL) + (*onig_warn)((char* )buf); + else + rb_compile_warn(env->sourcefile, env->sourceline, (char* )buf); +} + static UChar* find_str_position(OnigCodePoint s[], int n, UChar* from, UChar* to, UChar **next, OnigEncoding enc) |