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If an explicit complete function has only one match but is used directly after
the default tab completion, than the single match is shown instead of inserted.
The solution is resetting the 'rl_last_func' variable if it is set to
'rl_complete' when using an explicit complete function.
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New commands:
- rc-complete-command, per default bound to "M-!"
- rc-complete-filename, "M-/"
- rc-complete-variable, "M-$"
These commands are useful, if one wants a specific type of completion which is
not performed by the context-senstive default one, e.g. filename completion at
the beginning of the line or command completion for the second word (after
sudo).
The readline code now also sets the application name to "rc", making it
possible to specify different bindings for these commands in ~/.inputrc:
$if rc
"\C-x\C-[": rc-complete-command
"\C-[\C-x": rc-complete-filename
"\C-x\C-v": rc-complete-variable
$endif
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New completion entry functions for readline specific code:
- compl_var for variables
- compl_fn for functions
- compl_builtin for builtins
- compl_extcmd for external commands in path
- compl_command, which combines the last three
The first three are simple wrappers for compl_name, which iterates over a
typical rc table (an array of structs) yielding the name fields.
The appropriate completion entry function is chosen based on the
character/token that preceeds the word to complete: '$' for variable,
beginning of line or one of [`@|&(){;] for command. Otherwise the shell falls
back to readline's default completion, which it also does, if the chosen
completion entry function finds no match.
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edit_catcher() performs a longjmp via rc_raise() to the matching setjmp in
doit(). The latter does the same as before, so that edit_alloc() gets called
again, but this time the installation of the signal handlers trashes the old
handlers saved in the last call. Once readline() returns normally to
edit_alloc() the wrong signal handlers get restored.
The simplified call hierarchy looks like this:
doit();
sigsetjmp();
edit_alloc();
oldint = sys_signal(SIGINT, edit_catcher);
readline();
SIGINT -> edit_catcher();
siglongjmp();
sys_signal(SIGINT, oldint);
Restoring the old signal handlers in edit_catcher() solves this.
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This reverts commit 90de423084757db66041175b43a59b5ff630cb50.
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