Prompting (Debugging with GDB)
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28.3 Annotation for GDB Input
When GDB prompts for input, it annotates this fact so it is possible to know when to send output, when the output from a given command is over, etc.
Different kinds of input each have a different input type. Each input type has three annotations: a pre-
annotation, which denotes the beginning of any prompt which is being output, a plain annotation, which denotes the end of the prompt, and then a post-
annotation which denotes the end of any echo which may (or may not) be associated with the input. For example, the prompt
input type features the following annotations:
^Z^Zpre-prompt ^Z^Zprompt ^Z^Zpost-prompt
The input types are
prompt
When GDB is prompting for a command (the main GDB prompt).
commands
When GDB prompts for a set of commands, like in the commands
command. The annotations are repeated for each command which is input.
overload-choice
When GDB wants the user to select between various overloaded functions.
query
When GDB wants the user to confirm a potentially dangerous operation.
prompt-for-continue
When GDB is asking the user to press return to continue. Note: Don’t expect this to work well; instead use set height 0
to disable prompting. This is because the counting of lines is buggy in the presence of annotations.
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