jingham created this revision.
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For some reason (lost in the mists of time) CommandObjectMultiword will check
to see if you've passed it an argument with the text value "help" and if it
sees that, it will print help.
That's not how the lldb help system works, and this is nowhere documented.
It's not terribly discoverable, and doesn't behave like the rest of the lldb
command system - doesn't auto-complete, doesn't do shortest unique match,
etc... It also doesn't work for anything but the first level in the hierarchy:
(lldb) break help
Commands for operating on breakpoints (see 'help b' for shorthand.)
Syntax: breakpoint <subcommand> [<command-options>]
...
But:
(lldb) break set help
error: invalid combination of options for the given command
It is also confusing if you happen across it because then you think that's the
way the help system works which it isn't.
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D142067
Files:
lldb/source/Commands/CommandObjectMultiword.cpp
Index: lldb/source/Commands/CommandObjectMultiword.cpp
===================================================================
--- lldb/source/Commands/CommandObjectMultiword.cpp
+++ lldb/source/Commands/CommandObjectMultiword.cpp
@@ -174,11 +174,6 @@
return result.Succeeded();
}
- if (sub_command.equals_insensitive("help")) {
- this->CommandObject::GenerateHelpText(result);
- return result.Succeeded();
- }
-
if (m_subcommand_dict.empty()) {
result.AppendErrorWithFormat("'%s' does not have any subcommands.\n",
GetCommandName().str().c_str());
Index: lldb/source/Commands/CommandObjectMultiword.cpp
===================================================================
--- lldb/source/Commands/CommandObjectMultiword.cpp
+++ lldb/source/Commands/CommandObjectMultiword.cpp
@@ -174,11 +174,6 @@
return result.Succeeded();
}
- if (sub_command.equals_insensitive("help")) {
- this->CommandObject::GenerateHelpText(result);
- return result.Succeeded();
- }
-
if (m_subcommand_dict.empty()) {
result.AppendErrorWithFormat("'%s' does not have any subcommands.\n",
GetCommandName().str().c_str());
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