The main output path has exited with status 0 on EPIPE since #232, but
auxiliary outputs still used println!/print!/io::stdout().flush().unwrap()
and panicked (exit code 101) when the reader of a piped stdout went away
early, e.g. 'bat --completion bash | head -n0'.
Route them through the existing convention instead: write!/writeln! to
io::stdout() and '?' so that Error::Io(BrokenPipe) reaches
default_error_handler, which exits with status 0. This covers
--completion, --config-file, --diagnostic (bugreport's print() becomes
format() + writeln!), --generate-config-file, the 'cache' subcommand
progress messages, the OSC title sequence of --set-terminal-title, and
the 'built without feature' notices.
Closes#4034
The `Attributes` ANSI style tracker in `src/vscreen.rs` declares, initializes,
clears (in `sgr_reset`), and re-emits (in `Display`) a `strike` field
documented as `ON: ^[9m / OFF: ^[29m`, but `update_with_sgr()` had no match
arm for SGR 9 (set strikethrough) or 29 (clear strikethrough). As a result
`strike` was only ever cleared, never set.
Because bat re-applies the tracked input ANSI style before each highlighted
text run (nu_ansi_term appends a full reset after every token), attributes
that are tracked — bold, dim, italic, underline — survive across tokens,
while strikethrough was silently dropped after the first token. This path is
active by default (`--strip-ansi`/`--sanitize` default to `never`).
Add the missing `9` and `29` arms, mirroring the sibling underline (4/24) and
italic (3/23) arms, so strikethrough is tracked and re-emitted like every
other supported attribute.
Co-Authored-By: Claude Opus 4.8 <[email protected]>
bat prepends the arguments from its config file to the command line, so a
user who has `--show-all` in their config and also types `-A` passes the
flag twice, and clap rejects that with "the argument '--show-all' cannot be
used multiple times" and exit code 2. The file is never displayed.
`--plain`, `--number`, `--number-nonblank`, `--force-colorization` and
`--no-paging` already avoid this by overriding themselves. The same is now
done for the eight remaining flags that affect how a file is displayed:
--show-all, --diff, --chop-long-lines, --squeeze-blank, --unbuffered,
--quiet-empty, --no-custom-assets and --set-terminal-title.
Repeating a flag produces byte-identical output to giving it once, and
--show-all still conflicts with --language as before.
Adds a `-b` / `--number-nonblank` flag that numbers only non-blank
lines. Blank lines (those containing only the line terminator) are
printed without a number and don't advance the counter, matching
`cat -b` behaviour.
- `-b` implies `--style=numbers` (same as `-n`), but only counts
non-blank lines
- `-b` takes precedence over `-n`: both `-bn` and `-nb` behave like `-b`
- `-bp` disables numbering (plain mode wins)
- Works with files, stdin, and piped output (like `-n`)
Closes#3856.
When an ignored suffix is also a registered extension (e.g. `.txt` maps to
"Plain Text"), `get_syntax_for_file_extension` matched the raw extension
before attempting the suffix strip. As a result `--ignored-suffix .txt` had
no effect on such files and first-line/shebang detection was never reached,
so a shell script saved as `*.txt` stayed unhighlighted.
Strip ignored suffixes first and detect on the remainder; only fall back to
the raw extension when no ignored suffix applies. When a suffix is stripped
but the remainder has no syntax, return `None` so the caller can use
first-line detection. Default behavior (no `--ignored-suffix`) is unchanged.
See #2745.
`get_languages` computed `desired_width = term_width - longest - separator.len()`.
When `--terminal-width` is smaller than the longest language name (e.g. 1), this
underflows `usize`: in overflow-checked builds it panics ("attempt to subtract with
overflow"), and in release it wraps to ~usize::MAX, silently disabling the extension
line-wrapping so `--terminal-width` is ignored for `--list-languages`.
Use `saturating_sub`, mirroring the fix applied to `print_snip` in #3804 (the snip
separator had the same `term_width - ...` underflow pattern). Output at normal widths
is unchanged.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
`InteractivePrinter::print_snip` computes the snip separator width as
`term_width - panel_count - snip_left_count - title_count`. At `--terminal-width 1`
the panel is disabled and `title_count == 2`, so the subtraction underflows
`usize` (release has no overflow-checks, so it wraps to ~usize::MAX); `str::repeat`
then aborts with "capacity overflow" whenever a snip separator is emitted (two or
more disjoint line ranges, or a diff gap) — which the default style does.
Use `saturating_sub` for the repeat counts so they clamp to 0 instead of
underflowing. Added an integration test.
When piped input has no filename hint, bat falls back to plain text. Many
common formats can be reliably identified by shebang or magic-string in the
first line (#!/bin/bash, <?xml, {"json: ...}, etc.). Adds a first-line
pattern matcher to assets.rs.
Fixes#3697
The Drop cleanup for Preprocessed inverted the exit-status check, so bat
emitted a warning when LESSCLOSE exited successfully and stayed silent on
failure. Align the condition with the intended behavior.
Mathjk