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(elisp)Adjusting Point

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Adjusting Point After Commands
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   It is not easy to display a value of point in the middle of a
sequence of text that has the `display' or `composition' property.  So
after a command finishes and returns to the command loop, if point is
within such a sequence, the command loop normally moves point to the
edge of the sequence.

   A command can inhibit this feature by setting the variable
`disable-point-adjustment':

 - Variable: disable-point-adjustment
     If this variable is non-`nil' when a command returns to the command
     loop, then the command loop does not check for text properties
     such as `display' and `composition', and does not move point out of
     sequences that have these properties.

     The command loop sets this variable to `nil' before each command,
     so if a command sets it, the effect applies only to that command.

 - Variable: global-disable-point-adjustment
     If you set this variable to a non-`nil' value, the feature of
     moving point out of these sequences is completely turned off.