bug "$message" literal in commit message

Hello,

I think I found a bug(or strange behavior) in the git. If commit message contains literal "$message" than that literal disappears from commit message.

For example:
-------------
user@comp ~/cc $ git commit -am "1$message1"
[master (root-commit) d36a841] 1
 1 file changed, 0 insertions(+), 0 deletions(-)
 create mode 100644 1

user@comp ~/cc $ git log
commit d36a841ae25510ada80246a78225446083fcb3e1
Author: user <e.zablotski@gmail.com>
Date:   Wed Jun 3 18:21:45 2015 +0200

    file
----------------

Sorry for having disturbed you

Yauheni Zablotski <e.zablotski@gmail.com> writes:

Learn shell ;-)

Instead of "git commit -am", try "echo" and repeat your exercise, and you would see:

	$ echo "1$message1"
        1

If you prepare a shell variable message1 beforehand, e.g.

	$ message1='This is the contents of message1 variable'
        $ echo "1$message1"
        1This is the contents of message1 variable

Your shell interpolates the value of message1 variable if you write "$message1" on your command line, way before individual commands (e.g. echo and git above) that receive the string as its parameter sees them.

Contrast the above with this invocation after understanding the above.

	$ git commit -a -m '1$message1'
	$ git log

Yauheni Zablotski <e.zablotski@gmail.com> writes:

Not a Git issue, but a user-error that Git cannot recover.

Your shell is doing the variable expansion before calling git, and $message1 is considered as a shell variable here. Git does not know that you used $message1.

Solution:

git commit -am '1$message1'

or

git commit -am "1\$message1"