Re: Gawk 3.1.6 bug - \xhh not interpreted properly

[Aharon Robbins]

Greetings.

Re the below. Please note the following from gawk.info:

`\xHH...'
     The hexadecimal value HH, where HH stands for a sequence of
     hexadecimal digits (`0'-`9', and either `A'-`F' or `a'-`f').  Like
     the same construct in ISO C, the escape sequence continues until
     the first nonhexadecimal digit is seen.  However, using more than
     two hexadecimal digits produces undefined results. (The `\x'
     escape sequence is not allowed in POSIX `awk'.)

Thanks,

Arnold

> Subject: Gawk 3.1.6 bug - \xhh not interpreted properly
> Date: Tue, 2 Jun 2009 13:38:22 -0400
> From: "Nielsen, Dan (GE, Corporate)" <address@hidden>
> To: <address@hidden>
> X-OriginalArrivalTime: 02 Jun 2009 17:38:23.0129 (UTC) 
> FILETIME=[ED41C090:01C9E3A8]
> X-detected-operating-system: by monty-python.gnu.org: GNU/Linux 2.6, seldom 
> 2.4 (older, 4)
> 
> 
> # ZERROR10.AWK - \xhh not interpreted properly
> # OS: Windows XP SP2 using GAWK 3.1.6
> # How to run: GAWK -f C:\AWK\ZERROR10.AWK
> BEGIN {
> # NG: using AWK95,GAWK prints: ,orp"
> print("\x22corp\x22")
> # OK: using AWK95,GAWK,MAWK,TAWK prints: "corp"
> print("\x22\x63orp\x22")
> print("\"corp\"")
> print("\042corp\042")
> # as succinct as it gets
> print("")
> print("\x22corp\x22") # GAWK prints: ,orp"
> print("\x22zorp\x22") # GAWK prints: "zorp"
> # if the character following \x22 is 0-9 or a-f
> # then the output is not as expected
> }
> 
> Output:
> 
> ,orp"
> "corp"
> "corp"
> "corp"
> 
> ,orp"
> "zorp"