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feat(lua): send "--" literally to Lua "-l" script

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Problem:
When "-l" is followed by "--", we stop sending args to the Lua script
and treat "--" in the usual way. This was for flexibility but didn't
have a strong use-case, and has these problems:
- prevents Lua "-l" scripts from handling "--" in their own way.
- complicates the startup logic (must call nlua_init before command_line_scan)

Solution:
Don't treat "--" specially if it follows "-l".
This commit is contained in:
Justin M. Keyes
2023-01-01 03:14:13 +01:00
parent 599e1d019a
commit 45549f031e
7 changed files with 74 additions and 53 deletions
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33
runtime/doc/starting.txt
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@@ -32,7 +32,7 @@ filename One or more file names. The first one will be the current
an option, precede the arglist with "--", e.g.: >
nvim -- -filename
< All arguments after "--" are interpreted as file names, no
other options or "+command" argument can follow.
other options or "+command" arguments can follow.
*--*
`-` Alias for stdin (standard input).
@@ -143,9 +143,9 @@ argument.
these commands, independently from "-c" commands.
*-S*
-S [file] Vimscript or Lua (".lua") [file] will be |:source|d after the
first file has been read or "Session.vim" if [file] is not
given. Equivalent to: >
-S [file] Executes Vimscript or Lua (".lua") [file] after the first file
has been read. See also |:source|. If [file] is not given,
defaults to "Session.vim". Equivalent to: >
-c "source {file}"
< Can be repeated like "-c", subject to the same limit of 10
"-c" arguments. {file} cannot start with a "-".
@@ -190,8 +190,9 @@ argument.
-E reads stdin as text (into buffer 1).
-es *-es* *-Es* *-s-ex* *silent-mode*
-Es Silent mode (no UI), for scripting. Unrelated to |-s|.
Disables most prompts, messages, warnings and errors.
-Es Script mode, aka "silent mode", aka "batch mode". No UI,
disables most prompts and messages. Unrelated to |-s|.
See also |-S| to run script files.
-es reads/executes stdin as Ex commands. >
printf "put ='foo'\n%%print\n" | nvim -es
@@ -215,16 +216,22 @@ argument.
*-l*
-l {script} [args]
Executes Lua {script} file and exits. All [args] (up to "--"
|---|) are treated as {script} args, not Nvim args: by Lua
convention they are set in the `_G.arg` global table. *lua-args*
On {script} error, Nvim exits with code 1.
Executes Lua {script} non-interactively (no UI) with optional
[args] after processing any preceding Nvim |cli-arguments|,
then exits. See |-S| to run multiple Lua scripts without args,
or in an interactive session.
*lua-args*
All [args] are treated as {script} arguments and passed
literally to Lua (in the conventional `_G.arg` global table),
thus "-l" ends processing of Nvim arguments.
Exits with code 1 on Lua error.
Sets 'verbose' to 1 (like "-V1"), so Lua `print()` writes to
output.
Any |cli-arguments| before "-l" are processed before executing
{script}. For example this quits before executing "foo.lua": >
Arguments before "-l" are processed before executing {script}.
This example quits before executing "foo.lua": >
nvim +q -l foo.lua
< This loads Lua module "bar" before executing "foo.lua": >
nvim +"lua require('bar')" -l foo.lua
@@ -256,7 +263,7 @@ argument.
-V[N]{file}
Like -V and sets 'verbosefile' to {file} (must not start with
a digit). Messages are not displayed; instead they are
a digit). Messages are not displayed, instead they are
written to {file}.
Example: >
nvim -V20vimlog