Problem:
Want `gQ` for _le multicursor_.
Solution:
- Don't use `gQ` for exmode.
- Introduce `:exmode`.
- Introduce `[count]q:` as an alias to `:exmode`.
Problem:
POSIX-compatible Ex-mode requires special-cases all over the codebase to
match various quirks that don't actually matter to users.
- The main utility of *interactive* Ex-mode is its REPL behavior, and
that can be achieved with `cmdwin`, which also gains extra UX
benefits.
- The main utility of *non-interactive* `nvim -es` is for shell
scripting, where Ex-mode quirks are mostly unhelpful (e.g. the
"Entering Ex mode" message).
Solution:
- Reimplement *interactive* Ex-mode as a "persistent, insert-mode
cmdwin" in Lua.
- "nvim -e/-E" is simply an alias to "gQ".
- Reframe *non-interactive* Ex-mode (`nvim -es`) as "script mode".
- Drop POSIX Ex-mode quirks.
Improvements:
- "nvim -V1 -es" output ends with a final newline!
- "nvim -V1 -es" no longer shows the "Entering Ex mode" msg. (This was
pointless noise, unwanted for scripting purposes.)
- stdin is no longer typeahead. Scripts (":lua io.read()") can read
stdin as data.
- Empty line is a no-op: a stray blank line no longer moves the cursor
(deviates from POSIX ex "+1"), no longer exits 1 at EOF (E501).
Preserved behavior:
- cursor starts at "$"
- mode()=="cv" (for non-interactive)
- multiline commands (:append/:function/heredoc pull continuation lines)
- bare-range print
- :print=>stdout
- -V1=>stderr
- CRLF input
- continue-after-error and exit codes
Dropped (regressed) POSIX behavior (non-interactive):
- Event loop only ticks while/between commands, not while blocked
waiting for a stdin line.
- ":g/pat/visual...Q"
- input()/getchar()/":s/x/y/c" no longer consume stdin lines as
answers: Nvim stops at end-of-input, skipping the rest of the script,
exit 0. Use ":lua io.read()" instead.
- If users care about this they should use interactive Ex-mode (`gQ`).
- ":@r" stops at end of the register instead of continuing to read
cmdline input from stdin.
Problem: tests: various tests leave swapfiles around
Solution: close open buffers using :bw! instead of :close!
2fa34b6422
Co-authored-by: Christian Brabandt <cb@256bit.org>
Problem: newline escape wrong in ex mode (Konrad Schwarz)
Solution: partly revert patch 7.3.014, remove backslash in front of a
newline when not in prompt mode in ex line mode
(Mohamed Akram)
This fixes newline escaping to allow passing multiple commands to
":global", multiple lines to shell commands, and ending lines in append
mode with backslashes. This should fix a POSIX/(traditional) VI
incompatiblity.
This reverts a previous incorrect attempt at patch v7.3.014 to fix
append mode which removed half of trailing backslashes which lead to,
eg. the following two commands being parsed as having a different number
of backslashes:
```
!echo foo\\\
```
```
!echo foo\\ \
```
fixes: vim/vim#6135fixes: vim/vim#7244closes: vim/vim#15120f3daa4525b
Co-authored-by: Mohamed Akram <mohd.akram@outlook.com>
Problem: Invalid memory access in Ex mode with global command.
Solution: Make sure the cursor is on a valid line. (closesvim/vim#7238)
3b6d57f2ce
Co-authored-by: Bram Moolenaar <Bram@vim.org>
Problem: Using invalid pointer with "V:" in Ex mode.
Solution: Correctly handle the command being changed to "+".
f50808ed13
Co-authored-by: Bram Moolenaar <Bram@vim.org>
Problem: Newline causes E749 in Ex mode (after 9.1.0573).
Solution: Don't execute empty command followed by a newline.
closes: vim/vim#156142432b4a753
Cherry-pick code change from patch 8.2.3405.
Problem: ex: trailing dot is optional for :g and :insert/:append
Solution: don't break out early, when the next command is empty.
(Mohamed Akram)
The terminating period is optional for the last command in a global
command list.
closes: vim/vim#154070214680a8e
Co-authored-by: Mohamed Akram <mohd.akram@outlook.com>
Problem: Printed line no longer overwrites colon when pressing Enter in
Ex mode (after 9.1.0573).
Solution: Restore the behavior of pressing Enter in Ex mode.
(zeertzjq)
closes: vim/vim#152587d664bf0eb
Problem: Empty CmdlineEnter autocommand causes errors in Ex mode.
Solution: Save and restore ex_pressedreturn. (Christian Brabandt,
closes # 12581, closesvim/vim#12578)
590aae3557
Co-authored-by: Christian Brabandt <cb@256bit.org>
Problem: Test fails because of changed error message.
Solution: Adjust the expected error message.
6b02b38ed0
Co-authored-by: Bram Moolenaar <Bram@vim.org>
Problem: Using NULL pointer with nested :open command.
Solution: Check that ccline.cmdbuff is not NULL.
7ac5023a5f
Co-authored-by: Bram Moolenaar <Bram@vim.org>
