Prevent bash from interpeting {+} in python script?

[rickalex21]

Hello,

I have a python program that calls another python module to open selected files in Neovim, each in a new tab with the cursor at the correct line. I am aware of the fzf.vim plugin. However, I prefer using my own handler, neovim_fzf_handler since this is a standalone program.

The issue is that Bash interprets {+} as commands instead of treating it as raw input. How can I prevent this? I also tried using awk instead of my module but had no success.

#...
    for query, result in search_results:
        print_heading(query)
        # Complexity O(N^2) 2 loops is only for testing when config.query = ["q1", "q2"]
        for res in result:
            fzf_input.append(f"{res['file']}:{res['line_number']}:1  (hello)")
    try:
        # Run fzf with bat as a previewer, remove user env FZF_DEFAULT_OPTS
        fzf_command = [
            "env", "FZF_DEFAULT_OPTS=",
            "fzf",
            # "bat --style=numbers,changes --color=always --highlight-line {2} {1}",
            "--border",
            "--delimiter=:",
            "--height=100%",
            "--ansi",
            "--multi",
            "--exact",
            "--pointer=👉",
            "--marker=✅",
            "--reverse",
            "--cycle",
            "--preview=bat {1} --highlight-line {2} --color=always --style=numbers",
            f"--header=[ tab: select ] [ ctrl-v: open nvim tabs ] [ ctrl-q: exit ] [ query: {query} ] ",
            "--preview-window=up,65%,border-bottom,+{2}+3/3,~3",
            "--bind",
           '''ctrl-v:become(PYTHONPATH=src:$PYTHONPATH python3 -c "import sys; from neovim_fzf_handler import process_fzf_selection; process_fzf_selection(' '.join(sys.argv[1:]))" {+} >/dev/tty 2>/dev/tty)''',
            "--bind",
            "ctrl-o:execute(nvim {1} +{2})",

        ]

        fzf_process = subprocess.Popen(
            fzf_command,
            stdin=subprocess.PIPE,
            stdout=subprocess.PIPE,
            stderr=subprocess.PIPE,
            text=True,
        )
        selected, error = fzf_process.communicate(input="\n".join(fzf_input))
#...

These are the lines of interest. Here i purposely insert (hello) to debug bash.

 fzf_input.append(f"{res['file']}:{res['line_number']}:1  (hello)")
  '''ctrl-v:become(IFS=_ PYTHONPATH=src:$PYTHONPATH python3 -c "import sys; from neovim_fzf_handler import process_fzf_selection; process_fzf_selection(' '.join(sys.argv[1:]))" {+} >/dev/tty 2>/dev/tty)''',

The selection usually looks like "/path/file.txt:1:1 random text here /path/file2.txt:1:1 random text here".
I then process it to output something like this:

nvim -p \
         "file1.md" \
         "file2.md" \
         "file3.md" \
         -c "tabnext 1 | call cursor(53,1)" \
         -c "tabnext 2 | call cursor(11,1)" \
         -c "tabnext 3 | call cursor(10,1)" \
         -c "tabnext 1"

Thanks

[junegunn]

The issue is that Bash interprets {+} as commands

I don't understand. What do you mean by "command"s?

[rickalex21]

In this line:

 '''ctrl-v:become(PYTHONPATH=src:$PYTHONPATH python3 -c "import sys; from neovim_fzf_handler import process_fzf_selection; process_fzf_selection(' '.join(sys.argv[1:]))" {+} >/dev/tty 2>/dev/tty)''',

The data in {+} is being executed by bash.

So if I have a string that is "/path/to/file1.txt:11:1 (some text here) /path/to/file2.txt" I will get a bash error:

bin/sh: -c: line 1: syntax error near unexpected token `)'

As shown in my first post changing this is what affects it, the (hi).

f"{res['file']}:{res['line_number']}:1 {res['text']} (hi)"

[junegunn]

This just works fine for me.

#!/usr/bin/env python3

import subprocess
fzf_command = [
        "env", "FZF_DEFAULT_OPTS=",
        "fzf",
        "--border",
        "--delimiter=:",
        "--height=100%",
        "--ansi",
        "--multi",
        "--exact",
        "--pointer=👉",
        "--marker=✅",
        "--reverse",
        "--cycle",
        "--preview=echo {+}",
        "--preview-window=up,65%,border-bottom,+{2}+3/3,~3",
        "--bind",
        '''ctrl-v:become(PYTHONPATH=src:$PYTHONPATH python3 -c "import sys; print('//'.join(sys.argv[1:]))" {+} >/dev/tty 2>/dev/tty)''',
        "--bind",
        "ctrl-o:execute(nvim {1} +{2})",
        ]

fzf_process = subprocess.Popen(
        fzf_command,
        stdin=subprocess.PIPE,
        stdout=subprocess.PIPE,
        stderr=subprocess.PIPE,
        text=True,
        )

fzf_input = ['foo:1:2 hello (world)', 'foo:2:2 hello (world)']
selected, error = fzf_process.communicate(input="\n".join(fzf_input))