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Fabian Homborg 0e1f5108ae
string: Allow collect --allow-empty to avoid empty ellision (#8054) 
* string: Allow `collect --no-empty` to avoid empty ellision

Currently we still have that issue where

    test -n (thing | string collect)

can return true if `thing` doesn't print anything, because the
collected argument will still be removed.

So, what we do is allow `--no-empty` to be used, in which case we
print one empty argument.

This means

    test -n (thing | string collect -n)

can now be safely used.

"no-empty" isn't the best name for this flag, but string's design
really incentivizes reusing names, and it's not *terrible*.

* Switch to `--allow-empty`

`--no-empty` does the exact opposite for `string split` and split0.

Since `-a`/`--allow-empty` already exists, use it.
2021-07-09 21:20:58 +02:00
..
widecharwidth Incorporate widecharwidth changes for narrow emoji 2020-08-04 12:40:46 -07:00
ast.cpp Make ast FLOGs slightly less chatty 2021-05-03 12:01:21 +02:00
ast.h Reformat 2020-11-22 14:39:48 +01:00
ast_node_types.inc Introduce a new fish ast 2020-07-04 14:58:02 -07:00
autoload.cpp Don't eagerly fetch the current time in autoloading 2020-08-08 15:30:04 -07:00
autoload.h Run clang-format on all files 2019-10-13 15:50:48 -07:00
builtin.cpp Properly report errors when builtin output fails 2021-04-03 16:11:25 -07:00
builtin.h Reformat source files with clang-format 2021-04-21 13:31:58 -07:00
builtin_argparse.cpp Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_argparse.h Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_bg.cpp Introduce notion of "wait handles" 2021-05-15 20:20:50 -07:00
builtin_bg.h Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_bind.cpp Move builtin_bind to out-of-line 2021-05-25 17:39:55 -07:00
builtin_bind.h Move builtin_bind to out-of-line 2021-05-25 17:39:55 -07:00
builtin_block.cpp Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_block.h Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_builtin.cpp Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_builtin.h Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_cd.cpp Reformat source files with clang-format 2021-04-21 13:31:58 -07:00
builtin_cd.h Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_command.cpp Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_command.h Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_commandline.cpp commandline: allow to get/set cursor position relative to token/process/job 2021-06-23 20:51:20 +02:00
builtin_commandline.h Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_complete.cpp Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_complete.h Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_contains.cpp Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_contains.h Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_disown.cpp Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_disown.h Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_echo.cpp Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_echo.h Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_emit.cpp Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_emit.h Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_eval.cpp Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_eval.h Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_exit.cpp Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_exit.h Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_fg.cpp Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_fg.h Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_function.cpp Allow on-job-exit handlers to be added for any pid in the job 2021-05-25 15:28:53 -07:00
builtin_function.h Reformat 2020-11-22 14:39:48 +01:00
builtin_functions.cpp Separate on-job-exit and and on-process-exit events 2021-05-19 11:29:08 -07:00
builtin_functions.h Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_history.cpp Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_history.h Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_jobs.cpp Use internal job ids in builtin_wait 2021-05-13 12:11:00 -07:00
builtin_jobs.h Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_math.cpp Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_math.h Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_printf.cpp Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_printf.h Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_pwd.cpp Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_pwd.h Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_random.cpp Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_random.h Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_read.cpp Remove wcstring_tok 2021-04-18 14:46:05 -07:00
builtin_read.h Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_realpath.cpp Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_realpath.h Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_return.cpp Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_return.h Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_set.cpp Remove stale path validation logic 2021-07-03 08:45:47 +02:00
builtin_set.h Move builtin_bind to out-of-line 2021-05-25 17:39:55 -07:00
builtin_set_color.cpp set_color: Print an error for unknown options 2021-05-27 19:03:55 +02:00
builtin_set_color.h Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_source.cpp Reformat source files with clang-format 2021-04-21 13:31:58 -07:00
builtin_source.h Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_status.cpp Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_status.h Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_string.cpp string: Allow collect --allow-empty to avoid empty ellision (#8054) 2021-07-09 21:20:58 +02:00
builtin_string.h Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_test.cpp Make test error when number is invalid nicer 2021-04-24 11:18:58 +02:00
builtin_test.h Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_type.cpp Reformat source files with clang-format 2021-04-21 13:31:58 -07:00
builtin_type.h Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_ulimit.cpp Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_ulimit.h Make arguments to builtins const 2021-03-28 15:31:25 -07:00
builtin_wait.cpp Refactor wait handles 2021-05-17 15:25:21 -07:00
builtin_wait.h Make arguments to builtins const 2021-03-28 15:31:25 -07:00
color.cpp Reformat source files with clang-format 2021-04-21 13:31:58 -07:00
color.h Refactor color.h/color.cpp 2021-02-08 15:16:21 -06:00
common.cpp Migrate remaining calls from debug_safe to FLOGF_SAFE 2021-07-05 15:47:56 -07:00
common.h Migrate remaining calls from debug_safe to FLOGF_SAFE 2021-07-05 15:47:56 -07:00
complete.cpp Resolve relative paths in command names for complete -p 2021-05-16 21:52:38 +02:00
complete.h Allow specifying a limit on number of expansion in operation_context 2020-12-22 12:38:51 -08:00
enum_set.h [cppcheck] add some std::move 2020-03-14 15:07:54 -07:00
env.cpp env: remove trailing null-terminator from default path 2021-05-25 08:12:21 +02:00
env.h Clean up use_posix_spawn 2021-05-31 13:38:56 -07:00
env_dispatch.cpp Enable OSC 0 when running in WezTerm 2021-07-08 16:10:11 +02:00
env_dispatch.h Declare functions in headers or use internal linkage (static) 2020-09-08 22:44:03 +02:00
env_universal_common.cpp Do not flock the uvars file on remote filesystems 2021-05-10 15:24:32 -07:00
env_universal_common.h Mild refactoring of flock logic inside env_universal_t 2021-05-10 15:23:57 -07:00
event.cpp Fix incorrect comparison of function pointers 2021-06-28 18:06:04 -05:00
event.h Allow on-job-exit handlers to be added for any pid in the job 2021-05-25 15:28:53 -07:00
exec.cpp Clean up use_posix_spawn 2021-05-31 13:38:56 -07:00
exec.h Move autoclose_pipes_t from io.h to fds.h 2021-02-05 17:58:08 -08:00
expand.cpp Better errors when calling a command in a command substitution fails 2021-04-19 16:47:17 +02:00
expand.h Stop expanding globs in command position when performing error checking 2020-12-22 12:38:51 -08:00
fallback.cpp Declare functions in headers or use internal linkage (static) 2020-09-08 22:44:03 +02:00
fallback.h Remove lrand48 checks and support 2020-07-08 11:00:12 -07:00
fd_monitor.cpp Reformat source files with clang-format 2021-04-21 13:31:58 -07:00
fd_monitor.h Introduce select_wrapper_t 2021-04-17 16:43:27 -07:00
fds.cpp Fix set_cloexec check 2021-05-22 18:09:15 +02:00
fds.h Remove fd_check_is_remote 2021-05-10 14:23:07 -07:00
fish.cpp Migrate remaining calls from debug_safe to FLOGF_SAFE 2021-07-05 15:47:56 -07:00
fish_indent.cpp Migrate remaining calls from debug_safe to FLOGF_SAFE 2021-07-05 15:47:56 -07:00
fish_key_reader.cpp Remove timeout input events 2021-04-17 16:43:28 -07:00
fish_test_helper.cpp Readd awkward unused-result dance 2021-05-18 09:44:29 +02:00
fish_tests.cpp Refactor wait handles 2021-05-17 15:25:21 -07:00
fish_version.cpp Reformat all files 2019-05-05 12:09:25 +02:00
fish_version.h Revert "Generate FISH_BUILD_VERSION info for cmake builds" 2018-01-08 22:28:10 -08:00
flog.cpp Migrate remaining calls from debug_safe to FLOGF_SAFE 2021-07-05 15:47:56 -07:00
flog.h Migrate remaining calls from debug_safe to FLOGF_SAFE 2021-07-05 15:47:56 -07:00
function.cpp Catch invalid function names in highlighting and autosuggestion 2021-06-22 12:37:45 -07:00
function.h Catch invalid function names in highlighting and autosuggestion 2021-06-22 12:37:45 -07:00
future_feature_flags.cpp feature flags: default stderr-nocaret to on 2021-04-12 22:18:48 +08:00
future_feature_flags.h feature flags: add the notion of a default value for each flag 2021-04-12 22:18:48 +08:00
global_safety.h Reformat 2020-11-22 14:39:48 +01:00
highlight.cpp Correct a suspicious assigning of a value to a reference 2021-06-26 20:06:40 -07:00
highlight.h Reformat source files with clang-format 2021-04-21 13:31:58 -07:00
history.cpp Do not lock the history file on remote filesystems 2021-05-10 14:23:07 -07:00
history.h Fix some potential leaks in history file contents 2021-05-09 11:59:29 -07:00
history_file.cpp Do not lock the history file on remote filesystems 2021-05-10 14:23:07 -07:00
history_file.h Fix a unique_ptr build error with gcc 4.8 2021-05-10 16:49:11 -07:00
input.cpp Reformat source files with clang-format 2021-04-21 13:31:58 -07:00
input.h Introduce prepare_to_select, fixing job_summary.py 2021-04-17 16:43:28 -07:00
input_common.cpp Revert "Avoid excessive polling of universal variable file" 2021-07-03 14:31:37 +02:00
input_common.h Introduce prepare_to_select, fixing job_summary.py 2021-04-17 16:43:28 -07:00
intern.cpp Declare functions in headers or use internal linkage (static) 2020-09-08 22:44:03 +02:00
intern.h restyle intern module to match project style 2016-05-01 20:28:46 -07:00
io.cpp io: Silence write error with EPIPE 2021-04-13 10:38:17 +02:00
io.h Fix a few mild warnings with gcc 4.8 2021-05-10 16:49:01 -07:00
iothread.cpp Introduce select_wrapper_t 2021-04-17 16:43:27 -07:00
iothread.h Introduce select_wrapper_t 2021-04-17 16:43:27 -07:00
job_group.cpp Implement cancel groups 2020-09-03 11:01:27 -07:00
job_group.h Implement cancel groups 2020-09-03 11:01:27 -07:00
kill.cpp Make the kill ring thread-safe 2021-04-21 17:37:44 -07:00
kill.h Implementation of variable with killring entries 2021-04-21 16:39:29 -07:00
lru.h Use unordered_map instead of map in lru 2020-08-08 15:32:06 -07:00
maybe.h Fix a few mild warnings with gcc 4.8 2021-05-10 16:49:01 -07:00
null_terminated_array.cpp Rework null terminated arrays 2021-03-28 15:31:25 -07:00
null_terminated_array.h Rework null terminated arrays 2021-03-28 15:31:25 -07:00
operation_context.cpp Allow specifying a limit on number of expansion in operation_context 2020-12-22 12:38:51 -08:00
operation_context.h Expand more when performing history path detection 2021-01-08 12:58:34 -08:00
output.cpp output: Allow "--background foo" and "-b foo" for background colors 2021-06-10 10:42:30 +02:00
output.h Use wcs2string when outputting the screen 2021-02-17 15:38:46 -08:00
pager.cpp Revert "Attempt to simplify how completions get presented in the pager" 2020-12-04 16:44:48 +01:00
pager.h Revert "Attempt to simplify how completions get presented in the pager" 2020-12-04 16:44:48 +01:00
parse_constants.h Point to builtins begin/end when a failed command starts with "{" 2021-06-23 21:47:40 +02:00
parse_execution.cpp Point to builtins begin/end when a failed command starts with "{" 2021-06-23 21:47:40 +02:00
parse_execution.h Revert "Prevent redirecting internal processes to file descriptors above 2" 2021-03-03 22:26:33 +01:00
parse_tree.cpp Output human-readable descriptions of some parse errors 2021-02-09 22:38:16 +01:00
parse_tree.h Reduce copying in parse_util_detect_errors 2020-07-12 16:57:30 -07:00
parse_util.cpp Remove spurious character escape 2021-06-15 01:19:01 +02:00
parse_util.h Rework null terminated arrays 2021-03-28 15:31:25 -07:00
parser.cpp Refactor wait handles 2021-05-17 15:25:21 -07:00
parser.h Refactor wait handles 2021-05-17 15:25:21 -07:00
parser_keywords.cpp Add string to reserved keywords 2020-12-06 15:39:49 +01:00
parser_keywords.h Make IWYU output in lint.cpp less messy 2016-06-23 17:26:08 -07:00
path.cpp Do not flock the uvars file on remote filesystems 2021-05-10 15:24:32 -07:00
path.h Resolve relative paths in command names for complete -p 2021-05-16 21:52:38 +02:00
postfork.cpp Migrate remaining calls from debug_safe to FLOGF_SAFE 2021-07-05 15:47:56 -07:00
postfork.h FISH_USE_POSIX_SPAWN and HAVE_SPAWN_H fixes 2021-07-01 14:34:30 +02:00
print_help.cpp Run clang-format on all files 2019-10-13 15:50:48 -07:00
print_help.h restyle proc module to match project style 2016-05-02 22:07:58 -07:00
proc.cpp Allow on-job-exit handlers to be added for any pid in the job 2021-05-25 15:28:53 -07:00
proc.h Allow on-job-exit handlers to be added for any pid in the job 2021-05-25 15:28:53 -07:00
reader.cpp Notice when exit has been run from within fish_prompt 2021-06-12 10:20:49 -07:00
reader.h Re-read terminal modes after config.fish 2021-03-07 11:23:59 +01:00
redirection.cpp Collapse io_data switch statements 2019-12-29 15:51:22 -08:00
redirection.h dup2_list_t::resolve_chain to stop returning maybe 2019-12-29 14:49:05 -08:00
sanity.cpp Change C casts to C++ ones 2020-05-01 13:30:56 -07:00
sanity.h Amend typos and grammar errors 2019-11-25 13:07:15 +01:00
screen.cpp screen: Remove errant line 2021-05-18 11:27:30 +02:00
screen.h Revert "Stop caching line breaks in the prompt calculation" 2020-11-12 10:55:11 -08:00
signal.cpp Reformat source files with clang-format 2021-04-21 13:31:58 -07:00
signal.h Remove the SIGIO signal handler and universal notifier 2021-04-03 18:11:29 -07:00
termsize.cpp Include <termios.h> instead of <sys/termios.h>. 2021-03-02 12:05:07 +01:00
termsize.h Eliminate the termsize handling from common.h 2020-06-07 20:00:42 -07:00
timer.cpp Pass some parameters by reference/move 2021-03-21 19:41:36 +01:00
timer.h Pass some parameters by reference/move 2021-03-21 19:41:36 +01:00
tinyexpr.cpp Reformat source files with clang-format 2021-04-21 13:31:58 -07:00
tinyexpr.h math: Use wchar 2020-12-14 22:54:53 +01:00
tokenizer.cpp Remove redundant parens 2021-06-15 03:27:55 +02:00
tokenizer.h Separate out variable assignments when completing 2020-09-26 17:30:25 -07:00
topic_monitor.cpp Introduce select_wrapper_t 2021-04-17 16:43:27 -07:00
topic_monitor.h Correct a stale comment 2020-08-24 12:12:10 -07:00
trace.cpp Change fish_trace prefix to "->" instead of plusses 2020-12-11 21:24:33 +01:00
trace.h Add support for fish_trace variable to trace execution 2019-11-02 14:40:57 -07:00
utf8.cpp Change C casts to C++ ones 2020-05-01 13:30:56 -07:00
utf8.h [clang-tidy] Fix inconsistent declarations 2019-11-25 14:13:33 -08:00
util.cpp [clang-tidy] numeric literals to uppercase 2020-04-05 10:13:13 +02:00
util.h Return glob ordering to pre-3.1 state 2020-02-14 19:06:19 +01:00
wait_handle.cpp Refactor wait handles 2021-05-17 15:25:21 -07:00
wait_handle.h Allow on-job-exit handlers to be added for any pid in the job 2021-05-25 15:28:53 -07:00
wcstringutil.cpp Remove wcstring_tok 2021-04-18 14:46:05 -07:00
wcstringutil.h Remove wcstring_tok 2021-04-18 14:46:05 -07:00
wgetopt.cpp Make arguments to builtins const 2021-03-28 15:31:25 -07:00
wgetopt.h Make arguments to builtins const 2021-03-28 15:31:25 -07:00
wildcard.cpp Allow ** glob segments to match zero directories 2020-12-28 23:51:18 -08:00
wildcard.h Clean up some comments around wildcard expansion 2020-12-28 23:51:18 -08:00
wutil.cpp Minor improvements to file_id_t 2021-06-13 17:20:04 -07:00
wutil.h Minor improvements to file_id_t 2021-06-13 17:20:04 -07:00