ash: deal with some TODOs (mostly trivial)

function                                             old     new   delta
msg_illnum                                             -      19     +19
evalvar                                             1365    1364      -1
illnum                                                19       -     -19
subevalvar                                          1182    1158     -24
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 0/2 up/down: 19/-44)            Total: -25 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 7 insertions, 1 deletions

diff --git a/libbb/process_escape_sequence.c b/libbb/process_escape_sequence.c
index 6de2cacdd..11059d1a5 100644
--- a/libbb/process_escape_sequence.c
+++ b/libbb/process_escape_sequence.c
@@ -45,6 +45,9 @@ char FAST_FUNC bb_process_escape_sequence(const char **ptr)
         }
 #endif
 
+        /* bash requires leading 0 in octal escapes:
+         * \02 works, \2 does not (prints \ and 2).
+         * We treat \2 as a valid octal escape sequence. */
         do {
                 d = (unsigned char)(*q) - '0';
 #ifdef WANT_HEX_ESCAPES
@@ -80,7 +83,10 @@ char FAST_FUNC bb_process_escape_sequence(const char **ptr)
                                 break;
                         }
                 } while (*++p);
-                n = *(p + (sizeof(charmap)/2));
+                /* p points to found escape char or NUL,
+                 * advance it and find what it translates to */
+                p += sizeof(charmap) / 2;
+                n = *p;
         }
 
         *ptr = q;