[bug-gawk] The GNU Awk User's Guide:1.1.6> Shell-Quoting Issues

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Hi,
?0?2?0?2?0?2 I'm a novice to awk, and find the awk user's guide at gnu web, the link is like below:
?0?2?0?2?0?2 http://www.gnu.org/software/gawk/manual/gawk.html

?0?2?0?2?0?2 My system is ubuntu, details like below:
?0?2?0?2?0?2 ubuntu 12.04.1 LTS

?0?2?0?2?0?2 My gawk version is like below:
?0?2?0?2?0?2 GNU Awk 3.1.8

?0?2?0?2?0?2 A little issue I encountered is when I read the The GNU Awk User's Guide:1.1.6>?0?2 Shell-Quoting Issues,?0?2 the guide says:

?0?2?0?2?0?2?0?2?0?2?0?2?0?2?0?2?0?2 $ awk "BEGIN { print \"Don't Panic!\" }"
?0?2?0?2?0?2?0?2?0?2?0?2?0?2?0?2?0?2 -| Don't Panic!

?0?2?0?2?0?2 However, when I write the same thing into my termial,

?0?2?0?2?0?2 ?0?2?0?2?0?2 address@hidden:~/tmp$ gawk "BEGIN { print \"Don't Panic!\" }"
?0?2?0?2?0?2 ?0?2?0?2?0?2 bash: !\": event not found

?0?2?0?2?0?2 and I work around this issue using the below command,

?0?2?0?2?0?2 ?0?2?0?2?0?2 address@hidden:~/tmp$ gawk "BEGIN { print \"Don't Panic\!\" }"
?0?2?0?2?0?2 ?0?2?0?2?0?2 gawk: warning: escape sequence `\!' treated as plain `!'
?0?2?0?2?0?2 ?0?2?0?2?0?2 Don't Panic!

?0?2?0?2?0?2 I think '!' is a sensitive sign to bash.

?0?2?0?2?0?2 Best wishes to you from?0?2 Jianchao.li(??????) Shenzhen city, Guangdong province, China Mainland.