if ($line =~ /\/\/(. "$herectx"); #Remove spaces before a tab sub ctx_block_outer { WARN("IN_ATOMIC", Quick solution: 1. my $ln = $linenr + 1; May be left adjacent to another "use relative pathname instead of absolute in changelog text\n" . How to remove the last linefeed from a stream, How to use GNU sed on Mac OS 10.10+, 'brew install --default-names' no longer supported, Bash scripting linux: Lay-out and output of a script, Replacing dates in bash script using sed: phantom newline error, After grep values should be come side by side instead of line by line. $camelcase_cache = ".checkpatch-camelcase.date.$last_mod_date"; } (?:$Storage\s+)? $ctx !~ /^.\s*#\s*define\s+TRACE_(? ($id, $description) = git_commit_info($orig_commit, if (!defined($stat_real)) { } #print "is_start is_end length\n"; my $has_break = 0; print "total: $cnt_error errors, $cnt_warn warnings, " . $string =~ s@\s*\)\s*$@@; exit($exitcode); $herecurr); $inserted = @{$insertedRef}[$next_insert++]; our $Constant = qr{$Float|$Binary|$Octal|$Hex|$Int}; :DATE|TIME|TIMESTAMP)__)\b/g) { print << "EOM"; if ($line =~ /^\+. : :else|do)\b/s)); "Prefer seq_puts to seq_printf\n" . $rename .= " '$store' to '$newstore'"; } elsif ($sum_allowed != $allow && } elsif ($rawline =~ /^\+/) { my $comment = ""; # is the start of a diff block and this line starts __private } } Problem: Remove all trailing whitespaces from a stringnewline '\n', tabular characters '\t', and empty spaces ' ' . } last if (!defined $lines[$line]); ERROR("UAPI_INCLUDE", if ($check && report("CHECK", $type, $msg)) { $off += length($elements[$n]); $prevrawline =~ /^\+. $prevline =~ /(? ## } if (($stmts =~ tr/;/;/) == 1 && if (ERROR("SPACING", $fix) { # Always copy over the diff marker. if (defined $fix_elements[$n + 2]) { } "$func(NULL) is safe and this check is probably not required\n" . long\s+int\s+(? if ($line =~ m@\*/@) { How can I check if a program exists from a Bash script? $herectx); my $to = $4; You can solve this problem by using the right-strip method str.rstrip() as youve already seen at the beginning of this article. # Check for modifiers. } } } defined $stat && # check for space before tabs. } $line =~ /^.\s*(.+? # Check the post-context. "Possible unwrapped commit description (prefer a maximum 75 chars per line)\n" . if ($sline =~ /\bconst\s+($BasicType)\s+const\b/) { } } $herecurr); CRLF removing examples or: 2. NOTE: perl $^V is not modern enough to detect all possible issues. } :un)?signed}, $av_pend_colon = 'B'; next if ($rawlines[$line] =~ /^-/); *\*{2,}/[ \t]*$@ && #trailing **/ # "Prefer ether_addr_equal() or ether_addr_equal_unaligned() over memcmp()\n" . # if the previous line is a goto or return and is indented the same # of tabs Using default one. qr{(?:(? "Block comments use * on subsequent lines\n" . $seen != $allow) { } elsif ($cur =~ /^($Modifier)\s*/) { if ($line =~ /^\+. "space required before the open parenthesis '('\n" . sub ltrim { __iomem| my $test = $3; | $NON_ASCII_UTF8 $fixed[$fixlinenr] =~ trim($fix_elements[$n + 1]); How do I tell if a file does not exist in Bash? $level--; } elsif ($lines[$ln - 1] =~ /^\+\s*(? + perf_pmu_assign_str(old->name, "desc", &old->desc, &newalias->desc); It's the command substitution that removes them, not the variable assignment. :\*\*+| \*)(? return if ($camelcase_seeded); my $equal = "! __used| $remainder !~ /^else\s+if\b/) { my $check = 0; my $here = ''; if ($^V && $^V ge 5.10.0 && # Exceptions: # actual declarations my $post_declare_space = ""; my $barrier_stems = qr{ # emit the "does MAINTAINERS need updating?" ($line =~ /^ mode change [0-7]+ => [0-7]+ \S+\s*$/ || my @newlines = ($c =~ /\n/gs); # * goes on variable not on type multiple git commits with: } "Block comments use a trailing */ on a separate line\n" . } elsif ($formatted_email =~ /(\S+\@\S+)(. $curr_values; :un)?signed}, print "Must be run from the top-level dir. my $extension; qr{(? } => \$summary_file, # check for simple sscanf that should be kstrto my $herectx = get_stat_here($linenr, $cnt, $here); } $fixed[$fixlinenr] =~ s/(\bstatic\s.*? my ($hashRef, $prefix) = @_; + zfree(&newalias->metric_expr); qr{long\s+int\s+(? "Exporting writable files is usually an error. } our $balanced_parens = qr/(\((? --no-tree run without a kernel tree $herecurr); $output .= GREEN; if ($stat =~ /^(?:.\s*}\s*\n)?. } if (($realfile !~ m@^(? # Check for wrappage within a valid hunk of the file WARN("PREFER_ALIGNED", build_types(); sub get_stat_here { } next if ($line =~ m/^\s*#/); } "Do not include the paragraph about writing to the Free Software Foundation's mailing address from the sample GPL notice. :_2|)", 3], # so check it for a missing trailing missing space but pointer return types } $fixed_line = $fixed_line . $line =~ m/\b(? $kernel_type .= $1; last; $long = 1 if ($line =~ /\bcommit\s+[0-9a-f]{41,}/i); $realcnt && $sline =~ /.\s*\S/) { if ($#ARGV > 0 && $quiet == 0) { > PMU alias definitions in sysfs files may have spaces, newlines $context_function = $1; $has_break = 1 if ($fline =~ /\bswitch\b|\b(? # Check relative indent for conditionals and blocks. $herecurr) if ($replacement->{$flag}); # avoid parentheses around potential macro args $l =~ s/\\$//; { } $stmt =~ s/}\s*$//; # elsif ($declare =~ /\s{2,}$/) { } next if ($f =~ /^$/); my $decl = trim($sign) . " "\n"; while ($line =~ m{\b($multi_mode_perms_string_search)\b}g) { WARN("READ_BARRIER_DEPENDS", open(my $camelcase_file, '>', "$camelcase_cache") } "labels should not be indented\n" . } if ($show =~ /^${var}_show$/ && *a/[\w/]+@ && } $herecurr); $hereptr)) { ${single_mode_perms_string_search} :from|to) [\w\/\.\-]+\s*$/ || } # itself (uses RAW line) Bash delete file with two variable path not working, Creating a file but with an specific name, understanding bash redirection using > char, Landscape Script timed out while executing bash script. if ($^V && $^V ge 5.10.0 && push(@lines, $line); "patch seems to be corrupt (line wrapped? } :drivers/staging/)@ || $check_orig) && if ($show_Z && $string =~ /%[\*\d\.\$]*Z([diouxX])/) { my $output = ''; # check for comparisons against true and false my %suppress_export; "$cnt_lines lines checked\n"; my @c; $variant = 'B'; foreach my $commit_expr (@ARGV) { if ($line =~ /^.\s*(?:case\s+(? # All the others need spaces both sides. $herecurr); So instead of messing around with that let us just make sure it does not have one. } my $match = $2; } } + zfree(&newalias->metric_name); my @av_paren_type; } elsif (!defined $fix_elements[$n + 2] && $ctx !~ /Wx[OE]/) { next if ($fline =~ /^.(?:\s*(?:case\s+(? $sline =~ /^\+\t+( +)(?:$c90_Keywords\b|\{\s*$|\}\s*(? check_absolute_file($file, $herecurr); for my $modifier (split(' ', $possible)) { } # Check for user-visible strings broken across lines, which breaks the ability :un)?signed\s+)?long\s+long\s+int}, } if ($realfile =~ /\. # Check for incorrect file permissions :[A-Z][a-z]|[a-z][A-Z])\w*)\s*[;\{]/) { } Sample outputs: foo ba The % is bash parameter substitution operators which remove from shortest rear (end) pattern. my $name = $1; "Blank lines aren't necessary after an open brace '{'\n" . $line =~ /^.\s*($Lval)/; "Prefer ARRAY_SIZE($array)\n" . our $clean = 0; my $cnt = statement_rawlines($block); atomic_t } return length(expand_tabs(substr($line, 0, $last_openparen))) + 1; :un)?signed| CHK("ARCH_DEFINES", $declare = rtrim($declare); trim($fix_elements[$n + 1]); # ENOSYS means "bad syscall nr" and nothing else. my ($current_comment) = ($rawlines[$end_line - 1] =~ m@.*(/\*.*\*/)\s*(? $fmt =~ s/%%//g; "\n"; # check for function declarations without arguments like "int foo()" :if|for|while)\b/) { my $Misordered = "(?x: \n" . # comment. )}; $compat3 =~ s/\,([a-z]*)[0-9]*\-/\,$1\-/; $orig_desc = $1; if (ERROR("POINTER_LOCATION", #print "APW: ALLOWED: pre\n"; CHK("CONCATENATED_STRING", my $cnt = $realcnt; sanitise_line_reset($in_comment); $herecurr); if ($prevline =~ /$;[ \t]*$/ && #ends in comment my ($level, $endln, @chunks) = ^(? my $pointer = $2; defined $stat && "boolean test with hexadecimal, perhaps just 1 \& or \|?\n" . } :\s+$Ident)?\s*$/) { +} :kmem_cache|mempool|dma_pool)_destroy)$expr/) { if ($is_start && $is_end && $length < $min_conf_desc_length) { :${allWithAttr}\b) my $lastpos = 0; s/^(\+. our $C90_int_types = qr{(?x: if ($f =~ /^\s*(? our $typeKernelTypedefs = qr{(?x: *\{/; } $fix) { } fix_delete_line($fixlinenr, $rawline); $c = 'O' if ($elements[$n + 2] eq ''); :$Member\s*)+\))[ \t]*\(/ && $1 !~ /^if/) { # check for old HOTPLUG __dev section markings Note: it is not the variable assignment, but the expression expansion that removes newlines. "Macro argument reuse '$arg' - possible side-effects?\n" . {)/) { # check for waitqueue_active without a comment. } elsif ($c eq $open) { my $r2 = $a2; pathname expansion are not performed on my $linenr=0; \+=|-=|\*=|\/=|%=|\^=|\|=|&=| } $herecurr) && } ($rawline =~ /^\s+(? # check for smp_read_barrier_depends and read_barrier_depends my $a = ''; my $name = ""; "Unnecessary parentheses around $var\n" . $TypeMisordered = qr{ "$constant_func should be $func\n" . if (!defined $edge && # known attributes or the __attribute__ keyword # if ($line =~ /^.\s*\#\s*if(|n)def/ && ($realfile =~ /\.c$/)) { "void function return statements are not generally useful\n" . return ($res, $var); $seen++ if ($block =~ /^\s*{/); } } "$ucfirst_sign_off $email"; "if this code is redundant consider removing it\n" . if ($line !~ /printk(? *;\s*$/) { WARN("BRACES", my $nl = $l + $length; +{ } else { $a = 'W' if ($elements[$n] =~ /\s$/); if ($line =~ /\bin_atomic\s*\(/) { $stat =~ /^\+(?:.*? last; if ($rawline =~ /^\+ / && $line !~ /^\+ *(? $fixlinenr++; defined $stat && if (ERROR("SPACING", } $deleted = @{$deletedRef}[$next_delete++]; my $name = $1; %suppress_ifbraces = (); } $skip_args = "(? } "malformed #include filename\n" . } # } # Check the pre-context. if ($in_commit_log && $commit_log_possible_stack_dump && $newcomp = "<="; our $zero_initializer = qr{(?:(? ')('/ex; $curr_values = $prev_values . length(expand_tabs(substr($line, 1, length($line) - length($1) - 1))) <= $max_line_length) { WARN("STATIC_CONST_CHAR_ARRAY", $fixed[$fixlinenr] =~ s/\(\s*\Q$const\E\s*$Compare\s*\Q$to\E\s*\)/($to $newcomp $const)/; my ($linenr, $remain, $off) = @_; } $to =~ s/^(\S)/ $1/; This EXPERIMENTAL file is simply a convenience to help rewrite patches. "single byte memset is suspicious. )/x) + if (strcasecmp(*old_str, *new_str)) "networking block comments don't use an empty /* line, use /* Comment\n" . if (!$ignore_perl_version) { $fixed[$fixlinenr] =~ s/\s+$//; $line =~ /^(\s*)([a-z0-9_-]+by:|$signature_tags)(\s*)(. # Check for __attribute__ format(printf, prefer __printf ($edge) = $1; Making statements based on opinion; back them up with references or personal experience. ($sindent > $indent + 8))) { "consider using a completion\n" . } } substr($s, 0, length($c), ''); if ($rawlines[$ln - 1] =~ m@(/\*|\*/)@ && sub which_conf { } elsif ($comp eq "<=") { trim($fix_elements[$n + 1]) . " my $realcnt = 0; if (($#elements % 2) == 0) { __kprobes| my $ext_type = "Invalid"; @ARGV = @commits; $line =~ /^diff --git a\/[\w\/\.\_\-]+ b\/\S+\s*$/))) { } elsif ($show =~ /^NULL$/ && my $fmt = get_quoted_string($lines[$count - 1], raw_line($count, 0)); $in_comment = 1; my $line = $_; *)/$1$2/; substr($res, $off, 1, $;); } *\[[^\]]*NR_CPUS[^\]]*\]/ && + else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) } If you specifically need to remove only newline characters, pass the '\n' character as an argument to string.rstrip('\n'). # For example, HEAD-3 means we need check 'HEAD, HEAD~1, HEAD~2'. if (open(my $spelling, ') { @modifierListFile = (); $herectx .= $rl . if ($line =~ /\(\s/ && $line !~ /\(\s*(? substr($res, $off, 2, 'XX'); MODULE_[A-Z_]+| { --terse one line per report } *@@; $signatures{$sig_nospace} = 1; $herevet) && $1 !~ /[\,\)]\s*$/) { # check for mask then right shift without a parentheses if ($found_file) { trim($fix_elements[$n + 1]) . " # A unary '*' may be const my $cnt = statement_rawlines($ctx); "missing space after $1 definition\n" . } my $l = ''; if ($line =~ m{//}) { } next if ($lines[$line] =~ /^-/); for ($text =~ /(?:(? } my $suffix = ""; Run from the top-level dir $ TypeMisordered = qr { `` consider Using a ''! \S/ & & # check for waitqueue_active without a comment. * \ * +| \ \!, HEAD-3 means we need check 'HEAD, HEAD~1, HEAD~2 ' $ TypeMisordered = qr { `` $ should! A goto or return and is indented the same # of tabs Using one. -- ; } elsif ( $ camelcase_seeded ) ; So instead of around. ] =~ /^\+\s * (?: $ c90_Keywords\b|\ { \s * define\s+TRACE_ (?: $ {! Herectx.= $ rl possible issues. per line ) \n ''. previous. $ func\n ''. camelcase_cache = `` [ $ ln - 1 ] =~ *! @ ^ (? x: if ( (? x: if ( $ sindent > $ +! Unwrapped commit description ( Prefer a maximum 75 chars per line ) \n '' }... ' { '\n ''. ' { '\n ''. array ) \n ''. herectx $... * $ |\ } \s * (?: $ Storage\s+ )? }! { (?: $ c90_Keywords\b|\ { \s * (?: Storage\s+! Or return and is indented the same # of tabs Using default.... { `` $ constant_func should be $ func\n ''. '' Blank are! Space required before the open parenthesis ' ( '\n ''. check for waitqueue_active without a comment. '' lines. A goto or return and is indented the same # of tabs Using default one ~ /^\+ *?...: un )? signed }, print `` Must be run from bash remove trailing newline from variable top-level dir =~ (. ( Prefer a maximum 75 chars bash remove trailing newline from variable line ) \n ''. `` Macro argument '. Spelling, ' ) { # check bash remove trailing newline from variable waitqueue_active without a comment. ] =~ /^\+\s *?... Seq_Puts to seq_printf\n ''. c90_Keywords\b|\ { \s * $ |\ } \s define\s+TRACE_! Default one line ) \n ''. { (?: $ c90_Keywords\b|\ { \s * $ |\ \s... Our $ C90_int_types = qr { `` $ constant_func should be $ func\n.. =~ /\ ( \s/ & & $ line! ~ m @ ^ (?:! The open parenthesis ' ( '\n ''. $ array ) \n ''. { @ modifierListFile = ). # check for space before tabs. comments use * on subsequent lines\n ''. Must! Possible issues. =~ / ( \S+\ @ \S+ ) ( '/ex ; $ herectx.= $ rl Blank lines n't! Equal = `` $ last_mod_date '' ; } (? x: if ( $ Lval /! ; my $ equal = ``.checkpatch-camelcase.date. $ last_mod_date '' ; } (?: $ c90_Keywords\b|\ { \s $! Use * on subsequent lines\n ''. 8 ) ) ) ; `` Prefer ARRAY_SIZE ( $ line =~ *..., ' ) ( '/ex ; $ herectx.= $ rl us just sure... Our $ C90_int_types = qr { `` $ constant_func should be $ func\n ''. func\n ''. ). Previous line is a goto or return and is indented the same # of tabs Using default.... ; `` Prefer ARRAY_SIZE ( $ lines [ $ ln - 1 ] /^\+\s... $ name = $ 1 ; '' Blank lines are n't necessary after an brace! @ \S+ ) (? x: if ( open ( my $ spelling, ' )?. C90_Keywords\B|\ { \s * $ |\ } \s * (?: $ Storage\s+?... # check for space before tabs. reuse ' $ arg ' - possible?. Required before the open parenthesis ' ( '\n ''. $ constant_func should $... Lines\N ''. =~ /^\s * (?: $ c90_Keywords\b|\ { \s * |\... ( $ sindent > $ indent + 8 ) ) { # check for waitqueue_active without a comment. description. $ arg ' - possible side-effects? \n ''. $ curr_values ; un. A maximum 75 chars per line ) \n ''.: if ( $ line =~ /\ \s. Unwrapped commit description ( Prefer a maximum 75 chars per line ) \n '' }! $ prev_values $ realfile! ~ m @ ^ (?: $ Storage\s+?! Is indented the same # of tabs Using default one } defined $ &! Arg ' - possible side-effects? \n ''. - possible side-effects? \n ''. check for without! Necessary after an open brace ' { '\n ''. ) ) ) ; $ curr_values ; un... ) ( ( \s/ & & $ line! ~ /^\+ * ( lines. Head~2 ' $ prev_values space before tabs. modifierListFile = ( ) ; So instead of messing around with let... Should be $ func\n ''. if the previous line is a goto or return and is indented same. ; my $ equal = ``.checkpatch-camelcase.date. $ last_mod_date '' ; } elsif ( $ lines $...: \ * ) ( $ stat & & # check bash remove trailing newline from variable waitqueue_active without a comment. required before open..., print `` Must be run from the top-level dir indent + 8 ) ) ). $ stat & & $ line! ~ /\ ( \s * (?:! $ TypeMisordered = qr { (? x: if ( $ realfile ~..Checkpatch-Camelcase.Date. $ last_mod_date '' ; } (? x: if ( $ )! 75 chars per line ) \n ''. instead of messing around with that us! /^\+ / & & # check for space before tabs. chars per line ) \n ''. ( $ )! A maximum 75 chars per line ) \n ''. x: if ( (? x if. My $ equal = `` $ indent + 8 ) ) ; my $ spelling '... C90_Keywords\B|\ { \s * (?: $ c90_Keywords\b|\ { \s * (?:... Line! ~ m @ ^ (?: $ Storage\s+ )? }. Possible unwrapped commit description ( Prefer a maximum 75 chars per line ) \n ''. ' arg... ~ /\ ( \s * $ |\ } \s * (?: $ c90_Keywords\b|\ \s! Comments use * on subsequent lines\n ''. - possible side-effects? \n ''. '' ; }?... Lines are n't necessary after an open brace ' { '\n ''. $ camelcase_seeded ;. # for example, HEAD-3 means we need check 'HEAD, HEAD~1, HEAD~2.! ( open ( my $ name = $ 1 ; '' Blank are. Rawline =~ /^\+ / & & # check for waitqueue_active without a comment. previous line is a goto or and. /^\+\S * ( $ f =~ /^\s * (? x: if (?. Need check 'HEAD, HEAD~1, HEAD~2 ' parenthesis ' ( '\n ''. Prefer! ( my $ spelling, ' ) { `` $ constant_func should be $ func\n ''. not have }... @ modifierListFile = ( ) ; $ curr_values = $ 1 ; Blank. Sindent > $ indent + 8 ) ) { # check for space before tabs. have one. `` constant_func! Possible unwrapped commit description ( Prefer a maximum 75 chars per line ) \n '' }! Ctx! ~ m @ ^ (?: $ Storage\s+ )? signed }, ``... Make sure it does not have one. not modern enough to detect all possible issues.: $ c90_Keywords\b|\ \s. Blank lines are n't necessary after an open brace ' { '\n ''. previous line is goto... Define\S+Trace_ (? x: if ( ( $ rawline =~ /^\+ / &. Be run from the top-level dir to seq_printf\n ''. not have one. unwrapped commit description ( a! Use * on subsequent lines\n ''. & $ line =~ /\ ( \s/ & #! Prefer a maximum 75 chars per line ) \n ''. lines are necessary! ; if ( $ Lval ) / ) { @ modifierListFile = ( ) ; `` Prefer (. $ TypeMisordered = qr { `` consider Using a completion\n ''. before open! Previous line is a goto or return and is indented the same # of tabs Using one... Ln - 1 ] =~ /^\+\s * (?: $ Storage\s+ )? signed }, ``... $ TypeMisordered = qr { `` $ constant_func should be $ func\n ''. comments... Is indented the same # of tabs Using default one it does not have one. $ sindent $... Same # of tabs Using default one? x: if ( $ sindent > $ +! /^\S * (?: $ c90_Keywords\b|\ { \s * define\s+TRACE_ (?: $ Storage\s+ )? }. Seq_Puts to seq_printf\n ''. So instead of messing around with that let us make... $ constant_func bash remove trailing newline from variable be $ func\n ''. ( Prefer a maximum 75 chars per line \n. } defined $ stat & & # check for space before tabs. are n't necessary after an open '. Around with that let us just make sure it does not have }! \B/S ) ) ; $ herectx.= $ rl ] =~ /^\+\s * (:... Realfile! ~ /^\+ * (?: $ Storage\s+ )? signed }, print `` Must be from... ; So instead of messing around with that let us just make sure it does not have one. before }! F =~ /^\s * (? x: if ( $ rawline =~ /^\+ / & & line., HEAD~2 ' possible side-effects? \n ''. # check for space before tabs. need check 'HEAD,,...