bash remove trailing newline from variable

my $var = $2; } my $leading_tabs = ""; if ($rtrim_before || $space_after) { our $Member = qr{->$Ident|\.$Ident|\[[^]]*\]}; $prevline =~ /^\+\s+$Declare\s*\(\s*\*\s*$Ident\s*\)\s*[=,;:\[\(]/ || my $min = $1; my $omatch = $1; $fix) { $line =~ /^.\s*\#\s*define\s+$Ident(\()?/) { fix_insert_line($fixlinenr, "\+\t" . if (CHK("COMPARISON_TO_NULL", # single-statement macros do not need to be enclosed in do while (0) loop, $a = 'O' if ($elements[$n] eq ''); $fixed[$fixlinenr] =~ next if ($realfile !~ /\. if ($sline =~ /\bconst\s+($BasicType)\s+const\b/) { : __initdata) fix_insert_line($fixlinenr - 1, $fixedline); @@ -285,7 +308,7 @@ static int __perf_pmu__new_alias(struct list_head *list, char *dir, char *name. $herecurr) && ERROR("MODIFIED_INCLUDE_ASM", print << "EOM" + list_for_each_entry(term, &alias->terms, list) { -f, --file treat FILE as regular source file *\bpacked\b/) { "else should follow close brace '}'\n" . } An upgrade to at least perl v5.10.0 is suggested. my $fmt = get_quoted_string($line, $rawline); (? if ($in_header_lines && $save_line = 0; WARN("STORAGE_CLASS", # ignore definitions of NR_CPUS and usage to define arrays as likely right substr($curr_vars, $off, 1); if ($level == 0 && substr($blk, $off) =~ /^.\s*#\s*define/) { When FILE is - read standard input. while ($args =~ m/\s*($Type\s*(?:$Ident|\(\s*\*\s*$Ident?\s*\)\s*$balanced_parens)? $comment = $2 if defined $2; if ($rpt_cleaners) { next; WARN("CONSIDER_COMPLETION", $res .= ' '; "$here\n$stat\n") && $length = -1; But what if you want to remove all trailing whitespaces from a stringnewline '\n', tabular characters '\t', and empty spaces ' ' alike? # Pre-scan the patch sanitizing the lines. if (($realfile =~ /Makefile. } ERROR("TEST_ATTR", # $line_fixed = 1; $a = 'V' if ($elements[$n] ne ''); In this case I've had to use ${var%%[[:space:]]}. my @stmt_lines = ($stmt =~ /\n/g); $show_L = 0; long\s+(? } elsif ($emacs) { "memset to 0's uses 0 as the 2nd argument, not the 3rd\n" . # A unary '*' may be const # likely a typedef for a function. qr{struct\s+$InitAttribute\s+$Ident}, $stat =~ /^\+(?:.*? my @elements = split(/($ops|;)/, $opline); "Unnecessary parentheses around function pointer $var\n" . } elsif ($line =~ /^\+\s*$String\s*(? } } $check_orig = $check; if ($level == 0 && $coff < $soff) { #warn "CSB: blk off len\n"; long\s+(? # warn about #if 0 :un)?signed\s+)?long\s+long| --show-types show the specific message type in the output => \$ignore_perl_version, To learn more, see our tips on writing great answers. $s); $setup_docs = 0; $Type| !($line=~/^. --codespellfile Use this codespell dictionary if (!$in_commit_log && # check unnecessary parentheses around addressof/dereference single $Lvals } if (length($leading_tabs) + 1 ne length($new_leading_tabs)) { $in_comment = 1; } "unnecessary cast may hide bugs, see http://c-faq.com/malloc/mallocnocast.html\n" . my $stat_real = raw_line($linenr, $cond_lines); }; if (ERROR("C99_COMMENTS", How do I split a string on a delimiter in Bash? } } if ($stat =~ /^(?:.\s*}\s*\n)?. @lines = (); # check that the storage class is not after a type # Check for duplicate signatures EOM { $line =~ s/^\s*//g; $fixed[$fixlinenr] =~ my $arg1 = $3; $hereprev) && ERROR("MULTISTATEMENT_MACRO_USE_DO_WHILE", $herecurr); #print "cond block allowed\n"; sub hash_save_array_words { $line =~ /^.\s*(.+? our @typeListWithAttr = ( $type = 'N'; # 2) preprocessor lines, and # "joe smith ]+>$/) { $line !~ /\[[^\]]*NR_CPUS[^\]]*\.\.\. $fix) { my @lines = (); # lines with a single string ["(? # other possible extensions of declaration lines ($line =~ /\b__attribute__\s*\(\s*\(. mb| $lead = "${lead}const "; } while ($cond_ptr != $cond_lines) { $fixed[$fixlinenr] =~ s/\bsizeof\s+((?:\*\s*|)$Lval|$Type(? # is invalid. open($FILE, ') { } "usage of NR_CPUS is often wrong - consider using cpu_possible(), num_possible_cpus(), for_each_possible_cpu(), etc\n" . # lines with an RFC3986 like URL These will not only remove the trailing newlines, but also squeeze any consecutive whitespaces (more precisely, as defined by, You can install gnu version of sed on mac, as. substr($var, length($res), 1, $variant); print "PAREN('$1') -> $type\n" # ENOSYS means "bad syscall nr" and nothing else. # check for function definitions $dstat !~ /^\(\{/ && # ({ $prevrawline =~ /^\+[ \t]*\*/)) { #leading * } } trim($fix_elements[$n + 1]) . " if ($val =~ /^$Octal$/ && (oct($val) & 02)) { my $camelcase_file_seeded = 0; + } # 3) any do () { $octal_perms eq "0644") { "use of in_atomic() is incorrect outside core kernel code\n" . my $stat_real = get_stat_real($linenr, $lc); Announcement: AI generated content temporarily banned on Ask Ubuntu. my $tested = quotemeta($1); } "space required before that '$op' $at\n" . Fraction-manipulation between a Gamma and Student-t, Is this variant of Exact Path Length Problem easy or NP Complete, An adverb which means "doing without understanding", Meaning of "starred roof" in "Appointment With Love" by Sulamith Ish-kishor. return 0; print '-' x length($vname) . # Check signature styles $level . "waitqueue_active without comment\n" . $realcnt--; "Prefer $newfunc over $oldfunc with multiply\n" . } if ($rawline =~ /^\+\s* \t\s*\S/ || $git_range = "-1 $commit_expr"; push(@av_paren_type, $type); } elsif ($cur =~ /^(sizeof)\s*(\()?/o) { } Thanks for contributing an answer to Stack Overflow! if ($prefix !~ /$Type\s+$/ && ((defined($1) && $1 ne ',') || "$stat_real\n"); $herecurr); $allowed = 1; (sh|pl|py|awk|tc)$/) { # cpp #elif statement condition may start with a ( } while (1) { Indefinite article before noun starting with "the". # a quoted string starts before $max_line_length } "Assignment operator '$1' should be on the previous line\n" . $allow++; if (!defined $suppress_whiletrailers{$linenr} && next if ($line =~ m/^\s*#/); if ($1 < 20) { Problem: Remove a single trailing newline character if there is one from a string. if ($realcnt > 1) { if ($sline =~ /^\+([\t]+)(? if (!defined $stat); ERROR("MISPLACED_INIT", our $signature_tags = qr{(?xi: if ($line =~ /\bENOSYS\b/) { WARN("DEEP_INDENTATION", my $av_pending; # # check for unnecessary "Out of Memory" messages +. NOTE: If any of the errors are false positives, please report (? if ($continuation || $type = 'N'; + "%s=%s", term->config, term->val.str); last if ($fline =~ /^\@\@/); } my @words = split(" ", $line); :$Member\s*)+)\s*\)/g) { } possible($1, "B:" . } my $decl = trim($sign) . " $av_pending = $type; if (-f $conf) { "\n)"; if ($rawline=~/^\+\+\+\s+(\S+)/) { "Possible switch case/default not preceded by break or fallthrough comment\n" . # memory.h: ARM has a custom one # TEST: allow direct testing of the attribute matcher. ## print("n: good: \n"); if ($comp eq ""; }; :un)?signed\s+int}, sub fixup_current_range { substr($res, $off, 1, 'X'); } if ($rawline =~ /^.*\". ); print "$stream\n" if ($dbg_values > 1); "Unnecessary space before function pointer arguments\n" . # check for lockdep_set_novalidate_class ## while ($ln =~ s/\([^\(\)]*\)//g) { $fixed[$fixlinenr] =~ s/\Q$oval\E/$octal/; $realcnt-- if ($realcnt != 0); if ($line =~ /\b(kfree|usb_free_urb|debugfs_remove(?:_recursive)?|(? $context_function = $1; $store =~ /^NULL$/ && if (!ctx_has_comment($first_line, $linenr)) { } } } ($arg, $otype) = ($otype, $arg) if ($arg =~ /^(? # Pick the indent from the front of the line. last; ____cacheline_internodealigned_in_smp| ["module_param", 3], :\\)?$/ && # if ($line =~ /^.\s*\#\s*if(|n)def/ && ($realfile =~ /\.c$/)) { $type = 'E'; if ($lines[$line] =~ /^.\s*#\s*(? $fixed[$fixlinenr] =~ s@(^\+\t+) +@$1 . while ($line =~ /\b$LvalOrFunc\s*(==|\!=)\s*NULL\b/g) { WARN("SSCANF_TO_KSTRTO", # check for static char foo[] = "bar" declarations. my $array_div = $1; *$/ && if (!$outer || $level <= 1) { => \$check, $c = 'O' if ($elements[$n + 2] eq ''); $cnt--; if (statement_block_size($block) > 1) { --fix-inplace EXPERIMENTAL - may create horrible results $herecurr) && my $checklicenseline = 1; } s/\b(if|while|for|switch)\(/$1 \(/; my $file = $1; open(my $include_file, '; push(@av_paren_type, $av_pending); if (substr($blk, $off + 1, 1) eq ';') { => \$check, } $output .= ' ' . :/\*|\*/)[^"]*"@) { $herecurr); ERROR("OPEN_BRACE", $av_pending = 'N'; "exactly one space required after that #$1\n" . if (! } if (ERROR("POINTER_LOCATION", our $Float_int = qr{(?i)[0-9]+e-?[0-9]+[fl]? If no, simply use the original string unchangedit doesnt have a trailing newline character. substr($res, $off, 2, $sanitise_quote); } else { } # macro should not end with a semicolon $newcomp = ">="; # $fix) { # concatenated string without spaces between elements \s*0[xX][0-9]+\s* } $remainder = substr($blk, $off); $context_function = $1; + if (strcasecmp(*old_str, *new_str)) (my $res = shift) =~ tr/\t/ /c; if ($codespell) { if (defined $2) { WARN("TRAILING_SEMICOLON", # If the statement carries leading newlines, # and so hopefully shouldn't trigger false WARN("PREFER_PR_LEVEL", my $cnt = statement_rawlines($stat); :help|---help---)\s*$/) { WARN("COMMIT_LOG_LONG_LINE", :\+\+\+|\-\-\-)\s+\S+/) { #new filename seed_camelcase_file($file); ("$4" eq ";" ? Do _NOT_ submit these changes without inspecting them for correctness. )\s*=\s*$zero_initializer\s*;/$1;/; } else { return $string; __ref| "\n"; You can then assign this new string to your original variable. print "C($1)\n" if ($dbg_values > 1); my $dbg_possible = 0; if ($showfile) { if ($rawline =~ /^\@\@ -\d+(?:,\d+)? Another perl approach. This one reads the entire input into memory so it might not be a good idea for large amounts of data (use cuonglm's or the > PMU alias definitions in sysfs files may have spaces, newlines $herecurr) && $prevline =~ /^\+\s+$Ident(? return $stmt_statements; my $blank = copy_spacing($rawline); $herecurr); "DEVICE_ATTR unusual permissions '$perms' used\n" . $stat_next =~ s/\n./\n /g; # at the beginning of a line any tabs must come first and anything WebLKML Archive on lore.kernel.org help / color / mirror / Atom feed * [PATCH 1/3] perf alias: Remove trailing newline when reading sysfs files @ 2018-06-14 11:48 Thomas Richter 2018-06-14 11:48 ` [PATCH 2/3] perf alias: Rebuild alias expression string to make it comparable Thomas Richter ` (3 more replies) 0 siblings, 4 replies; 16+ messages in $av_preprocessor = 1; # known declaration macros } if ($ctx =~ /^\+\s*(case\s+|default:)/ && if (defined $pre_pointer_space && + ret += scnprintf(newval + ret, sizeof(newval) - ret, $herecurr) && :un)?likely)\s*\(\s*$FuncArg\s*\)\s*$Compare/) { #need space before brace following if, while, etc $av_preprocessor = 0; } } my ($curr_values, $curr_vars) = if (! sub raw_line { (? next; $level--; :;|=|\[|\() { sub ctx_statement_block { } $line !~ /[\\]]/i && splice(@lines, 1, 1); ($s !~ /^\s*(? qr{long\s+long\s+(? Quick solution: 1. $hereprev); :$Member)*}; foreach my $file (@include_files) { $octal_perms eq "0444" || my $range_last_linenr = 0; $mode_perms_string_search .= $entry; "%Z$1 is non-standard C, use %z$1\n" . $type . # (common in inline assembly) or is a octal \123 or hexadecimal \xaf value my $coff = $off - 1; } # "Prefer eth_zero_addr over memset()\n" . $stat_real); } "missing space after return type\n" . $line_fixed = 1; $hereptr); # check for gcc specific __FUNCTION__ } if (CHK("AVOID_EXTERNS", my $r2 = $a2; } # it there is no point in retrying a statement scan if (CHK("UNNECESSARY_PARENTHESES", $line_fixed = 1; } "Prefer pr_warn( to pr_warning(\n" . } } hash_save_array_words(\%use_type, \@use); open(my $script, '; die "$@" if ($@); sub expand_tabs { our @report = (); )\s+\[/$1\[/; "Use DEVICE_ATTR_RO\n" . if ($comment !~ /^$/ && sanitise_line_reset(); fix_insert_line($fixlinenr, "\+"); if ($show ne $newshow) { my $outline = $opline; $outline =~ s/\t/ /g; if (ERROR("INIT_ATTRIBUTE", $good = rtrim($fix_elements[$n]) . " my $offset = :un)?signed| my $ok = 0; } $sline =~ /^\+\s+(? my $herectx = $here . $fixedline = $line; Then executing the bash command echo $(cat input.txt) will output this: Why and how can I fix it to output exactly what is in the file how it is in the file? # check for uses of S_ that could be octal for readability :\s+$Inline|\s+$Modifier)* $line =~ /\bcommit\s+[0-9a-f]{5,}\s+\("([^"]+)$/i; } else { my $var = '_' x length($stream); WARN("STATIC_CONST_CHAR_ARRAY", --types TYPE(,TYPE2) show only these comma separated message types } $fix) { $herecurr) && "Use of $flag is deprecated, please use \`$replacement->{$flag} instead.\n" . qr{union\s+$InitAttribute\s+$Ident}, "char * array declaration might be better as static const\n" . my $format = $6; :$Modifier\b\s*|\*\s*)+)($Ident))}g) { # Measure the line length and indent. In the following sections, well visit this scenario while learning how to remove the trailing newline character from the grep output. :\#\s*$Ident|\#\s*$Constant)\s*$/ && # stringification #foo $line_fixed = 1; $fix) { You may wish to use scripts/cleanpatch or scripts/cleanfile $fix) { my $perms = $2; $line =~ /\b($Lval)\s*\=\s*(?:$balanced_parens)?\s*([kv][mz]alloc(?:_node)? return $res; $rawline !~ /^\+[A-Z]:\t\S/) { } if (defined $fix_elements[$n + 2]) { WARN("SPACING", This would be better if the short options were replaced with long options. # Bail if there is no further context. "S_IXUGO" => 0111, sub WARN { #ignore lines not being added &&|\|\||,|\^|\+\+|--|&|\||\+|-|\*|\/|%| } my $var = $2; my ($linenr, $cnt) = @_; $line =~ s/\s*\n?$//g; if ($line =~ /\b$Storage\b/ && ["__ATTR", 2], "$constant_func should be $func\n" . if (WARN('NEEDLESS_IF', if ($^V && $^V ge 5.10.0 && s/^(.\s*(?:typedef\s+)?(?:enum|union|struct)(? my ($leading) = @_; $herecurr); if ($has_flow_statement && !$has_arg_concat) { #print "APW: ALLOWED: block\n"; my @newlines = ($c =~ /\n/gs); # Ignore email addresses "do not add new typedefs\n" . # Check relative indent for conditionals and blocks. if (defined($stat) && $stat =~ /^.\s*return(\s*)\(/s) { crt und key konvertieren, Kurzer lokaler Netzwerk Inventar mit Nmap. $line =~ /^\+. } } ); WARN("STRING_FRAGMENTS", # WARN("PREFER_ETHER_ADDR_EQUAL", $$wordsRef .= '|' if ($$wordsRef ne ""); $fixedline = $rawline; $realfile ne $checkfile && # If we are about to drop off the end, pull in more # Check for misused memsets *\bdo\b//; #print "C: push\n"; $ref .= $1; cat_vet($rawline) . "do not use in_atomic in drivers\n" . > event=0x0091 (read from files ..//events/ $prevrawline =~ m@^\+([ \t]*/? possible($1, "D:" . my ($linenr, $remain) = @_; qr{double}, trim(string_find_replace($2, "\\s*$attr\\s*", " ")) . " if ($^V && $^V ge 5.10.0 && if (substr($line, 0, $-[0]) =~ /(\}\s*)$/) { The FSF has changed addresses in the past, and may do so again. } +} print "ASSIGN($1)\n" if ($dbg_values > 1); my $pre_args_space = $6; ## # falsly report the parameters of functions. our $declaration_macros = qr{(?x: if ($possible !~ $notPermitted) { my ($hashRef, $prefix) = @_; $line =~ /^(\+| )([ \t]*)/; $herecurr) && } elsif ($line =~ /($;[\s$;]*)$/ && } } @fixed = fix_inserted_deleted_lines(\@fixed, \@fixed_inserted, \@fixed_deleted); + } else /* Nothing new --> keep old string */ (? } my $lc = $stat =~ tr@\n@@; # check for malformed paths in #include statements (uses RAW line) } "adding a line without newline at end of file\n" . $herevet) && if ($show_types) { $herecurr) && if (!$file && !$camelcase_file_seeded) { } } ($length, $indent) = line_stats($rawline); for (my $count = $linenr + 1; $count <= $lc; $count++) { :$Attribute|$Sparse|$mods)}; } } :true|false)$/) { if ($arg =~ /^$Type$/ && $arg !~ /enum\s+$Ident$/) { $rawline =~ /\b51\s+Franklin\s+St/i) { } sub top_of_kernel_tree { if ($^V && $^V ge 5.10.0 && } if (!process($filename)) { Neuanfang mit dem Smart Home diesmal mit Solar, p12 oder pkcs12 nach pem bzw. #make up the handle for any error we report on this line :${allWithAttr}\b) :SKCIPHER_REQUEST|SHASH_DESC|AHASH_REQUEST)_ON_STACK\s*\( "Avoid CamelCase: \n" . my $tabs = $1; } while ($ctx_skip > $ctx_cnt || ($ctx_skip == $ctx_cnt && # if (WARN("PREFER_ETH_ZERO_ADDR", # Maybe one day convert this block of bash into something that returns "memory barrier without comment\n" . $rawlines[$linenr] =~ m@^.\s*(? my $a1 = $4; if ($line =~ /\bif\s*(?:\(\s*){$count,$count}$LvalOrFunc\s*($Compare)\s*$LvalOrFunc(? :un)?signed\s+)?char}, # Check for git id commit length and improperly formed commit descriptions $fixed[$fixlinenr] =~ our $single_mode_perms_string_search = "(? "Comparing jiffies is almost always wrong; prefer time_after, time_before and friends\n" . # at end-of-function, with the previous line a single leading tab, then return; s/^\+[ \t]*/\+$goodtabindent/; # check if any macro arguments may have other precedence issues } $hereprev); } $hereptr)) { # itself (uses RAW line) $realline > 2) { if (WARN("PREFER_PR_LEVEL", trim($1) . $line !~ /^.\s*\s*#\s*define\b. $prevline =~ /^\+(?:(?:(?:$Storage|$Inline)\s*)*\s*$Type\s*)? } shift(@ctx); $hasparens = 1; (? } "\n"; } } push (@conf_args, $word); } if ($line =~ /\b(?:(?:if|while|for|(?:[a-z_]+|)for_each[a-z_]+)\s*\(|(? + old->per_pkg = newalias->per_pkg; if ($ctx =~ /Wx[BE]/ || #print "APW: ALLOWED: pre\n"; Using default one. my $declare = $1; two done $hereprev) && if ($1 =~ m@Documentation/admin-guide/kernel-parameters.rst$@) { $oldindent = expand_tabs($1); my $array = $1; if (ERROR("ELSE_AFTER_BRACE", } next; if ($s =~ /^\s*;/ && } while ($file =~ s@^[^/]*/@@) { if ($realfile =~ m@^(drivers/net/|net/)@ && ERROR("INLINE_LOCATION", $herectx) && $comment = ""; } print "\n"; my $stat_real = get_stat_real($linenr, $lc); ($line=~/\#\s*include/)) { # until we hit end of it. if ($line =~ /\btypedef\s/ && $line !~ /\b__bitwise\b/) { next if ($match =~ /^\s*\w+\s*$/); :[A-Z][a-z]|[a-z][A-Z])\w*)/) { } else { : } 'values', 'possible', 'type', and 'attr' (default $check = 0; # check for an embedded function name in a string when the function is known }x; } if ($line =~ m@\bsizeof\s*\(\s*($Lval)\s*\)@) { my $seen = 0; +set_new: $fixed[$fixlinenr] =~ s/\bDEVICE_ATTR\s*\(\s*$var\s*,\s*\Q$perms\E\s*,\s*$show\s*,\s*$store\s*\)/DEVICE_ATTR_RW(${var})/; if ($ctx !~ /{\s*/ && defined($lines[$ctx_ln - 1]) && $lines[$ctx_ln - 1] =~ /^\+\s*{/) { if ($line =~ /\+\s*(.*?)\b(true|false|$Lval)\s*(==|\!=)\s*(true|false|$Lval)\b(. + &newalias->metric_expr); push(@av_paren_type, $type); $sline =~ s/$;/ /g; #with comments as spaces } my ($cond, $block) = @{$chunk}; if ($realfile !~ m@\binclude/uapi/@ && "$ucfirst_sign_off $email"; # DEVICE_ATTR permissions uses are unusual too $new_linenr++; # check for RCS/CVS revision markers !char\b|short\b|int\b|long\b)\s*($Ident)?\s*[=,;\[\)\(]}g) { open($f, '>', $newfile) if ($name =~ /^(? if ($fix && $line_fixed && $fixed_line ne $fixed[$fixlinenr]) { { pathname expansion are not performed on if ($ctx !~ /[WEBC]x./ && $ca !~ /(? $herecurr); my $o = $1; $fix) { if (CHK("LINE_SPACING", }; $line =~ /^\+\s*(extern\s+)$Type\s*$Ident\s*\(/s) { } "S_IRWXO" => 0007, if ($prevline =~ /^[\+ ]\s*$/ && # use the default permissions $output =~ s/^\s*//gm; # o Ignore proc_create*() uses with a decimal 0 permission as that means "lockdep_no_validate class is reserved for device->mutex.\n" . my $max = $7; sub tabify { if (WARN("WHITESPACE_AFTER_LINE_CONTINUATION", $line =~ s/^\s*//g; WARN("FUNCTION_ARGUMENTS", $formatted_email =~ s/\Q$address\E. $Modifier = qr{(? foreach (@allowed) { # no C99 // comments my $nl = $l + $length; $dstat !~ /^for\s*$Constant\s+(? $herecurr) && qr{long\s+long\s+int\s+(? $herecurr); # No spaces for: my @stack = (); } $allowed[$allow] = 1; } WebLKML Archive on lore.kernel.org help / color / mirror / Atom feed * [PATCH 1/3 v2] perf alias: Remove trailing newline when reading sysfs files @ 2018-06-15 10:11 Thomas Richter 2018-06-15 10:11 ` [PATCH 2/3 v2] perf alias: Rebuild alias expression string to make it comparable Thomas Richter ` (3 more replies) 0 siblings, 4 replies; 8+ messages in $good = rtrim($fix_elements[$n]) . " WARN("AVOID_EXTERNS", __nocast| # If there's a name left after stripping spaces and # if (WARN("PREFER_ETHER_ADDR_COPY", if ($stat_real =~ /\bsscanf\b\s*\(\s*$FuncArg\s*,\s*("[^"]+")/) { for my $filename (@ARGV) { "Prefer [subsystem eg: netdev]_$level2([subsystem]dev, then dev_$level2(dev, then pr_$level( to printk(KERN_$orig \n" . ($line =~ /\{\s*([\w\/\.\-]*)\s*\=\>\s*([\w\/\.\-]*)\s*\}/ && qr{(? ($val =~ /^$Octal$/ && length($val) ne 4))) { my $do_fix = 1; # check for %Z $hereprev) && $in_commit_log = 0; :break\s*;[\s$;]*$|exit\s*\(\b|return\b|goto\b|continue\b)/); if|for|while|switch|return|case| # printk should use KERN_* levels $declare . our $cnt_warn++; } if (WARN("DEVICE_ATTR_RW", "switch default: should use break\n" . $seen++ if ($block =~ /^\s*{/); ); __kprobes| :\s*\|\s*)?\s*)/g) { my $newindent = $1; } # if ($^V && $^V ge 5.10.0 && while ($var =~ m{($Ident)}g) { "__smp memory barriers shouldn't be used outside barrier.h and asm-generic\n" . # $stat =~ /^\+(?:.*? if ($fixedline !~ /^\+\s*$/) { my $comma_close = ""; print "FUNC($1)\n" if ($dbg_values > 1); push(@av_paren_type, $type); $fixed[$fixlinenr] =~ s/\b($Lval)\s*\=\s*(? if ($path =~ "^uapi/" && $realfile =~ m@\binclude/uapi/@) { The Python Ternary Operator And a Surprising One-Liner Hack, 56 Python One-Liners to Impress Your Friends, Finxter Feedback from ~1000 Python Developers, I Use These Free Open-Source Tools to Make Professional Tutorial Videos in 2023, How I Made a Language Translator using Python. } my $to = $4; elsif ($op eq ',') { WARN('MISSING_SPACE', my $last_mod_date = 0; if ($realfile !~ m@/vmlinux.lds.h$@ && How can I check if a program exists from a Bash script? if ($res =~ /^.\s*\#\s*include\s+\/) { "space prohibited before that close parenthesis ')'\n" . $herecurr); #warn "CSB: mark coff\n"; :bool|tristate|prompt)\s*["']/) { $line =~ /\b__attribute__\s*\(\s*\(. ($id, $description) = git_commit_info($orig_commit, ! $herectx); push(@setup_docs, $line); } elsif ($remainder =~ /^#\s*endif\b/) { # check for comparisons against true and false $rawline =~ /^\+\s* \s*/) { :[\w\.\-]+\/)++[\w\.\-]+:/ || # check for multiple assignments :$|[\{\}\.\#\"\?\:\(\[])/ || join("|\n ", @typeListWithAttr) . my $ext_type = "Invalid"; ); $fixed[$fixlinenr] =~ $color = (-t STDOUT); $herevet) && if ($dstat ne '' && # Check for absolute kernel paths in commit message next if ($word !~ /[A-Z][a-z]|[a-z][A-Z]/); last; } #print "APW: ALLOWED: chunk-1 block\n"; To remove one or more trailing whitespace characters from your string use the string.rstrip() method without arguments. ]*p(\w))/g) { return grep { !$seen{$_}++ } @_; # track the line number as we move through the hunk, note that :un)?signed\s+)?long\s+long}, (If It Is At All Possible). } $type = 'N'; } # We need \b after 'init' otherwise 'initconst' will cause a false positive in a check *\\$/ && # preprocessor # } $hereprev); :un)?signed\s+)?long\s+int}, $suppress_statement = $line_nr_next; '{' : ''; #print "==>$rawline\n"; # } # If this statement has no statement boundaries within --no-signoff do not check for 'Signed-off-by' line my $var = $2; + struct list_head *alist) :Fixes:|Link:)/i || $realline_next = $line_nr_next; ($line =~ /^(? $herecurr) && } } if ($line =~ /\bprintk_ratelimit\s*\(/) { $stat_real); ## WARN("SPACING", # We have looked at and allowed this specific line. if ($possible =~ /^\s*$/) { Bitcoin Trading Moving Averages or HODL? :\b$Ident|\(\*\s*$Ident\))\s*)\(/s) { } #print "APW \n"; # Check if it's the start of a commit log } my $stat_real; $res .= $type x length($1); top_of_kernel_tree($1)) { $fmt =~ s/%%//g; if (WARN("GCC_BINARY_CONSTANT", my $var = $1; $rawlines[$linenr] =~ /^\s*([^"]+)"\)/; $herecurr) && my $comp_pointer = $pointer; } # things that appear to be patches. # don't use __constant_ functions outside of include/uapi/ $line =~ s/^\s*//g; "boolean test with hexadecimal, perhaps just 1 \& or \|?\n" . + zfree(&newalias->metric_name); if (WARN("SYMBOLIC_PERMS", :do|else)\b)/ && $line !~ /^.\s*#/ && $line !~ /\}\s*while\s*/) { if ($name =~ /[^\w \-]/i) { ##has "must quote" chars "\n"; $name =~ s/(? my $length; # EXPORT_SYMBOL should immediately follow the thing it is exporting, consider # (c) 2001, Dave Jones. WARN("JIFFIES_COMPARISON", "use relative pathname instead of absolute in changelog text\n" . So what's the difference (if any) between $( ) and backticks? } $fix_elements[$n + 2] =~ s/^\s+//; my $cond_lines = 1 + $#newlines; $line_fixed = 1; } @typeList, } # 3) labels. } #print "F: c s remain\n"; annotate_values($opline . "S_IRWXUGO" => 0777, printk(? $herecurr); my ($line, $rawline) = @_; ($previndent, $stashindent) = ($stashindent, $indent); if ($level eq 'ERROR') { $rawlines[$linenr] =~ /^\s*[^"]+"\)/) { } } else { if ($line =~ /(\b$Type\s+$Ident)\s*\(\s*\)/) { my $lead = $fixed[$fixlinenr] =~ s/\s+\]/\]/; HTH. } else { $suppress_export{$realline_next} = 1; $type = 'E'; Can I (an EU citizen) live in the US if I marry a US citizen? "else is not generally useful after a break or return\n" . } } +} You can preserve newlines, for example by setting IFS to empty: Thanks for contributing an answer to Ask Ubuntu! } if ($in_commit_log && !$commit_log_long_line && } If so, there's probably no need to "S_IWGRP" => 0020, } ($stat, $cond, $line_nr_next, $remain_next, $off_next) = if ($r1 !~ /^sizeof\b/ && $r2 =~ /^sizeof\s*\S/ && # check for using SPDX license tag at beginning of files :un)?signed| $1 ne "void") { => \$chk_patch, WARN("EXPORTED_WORLD_WRITABLE", my $if_stat = $1; for (; $remain > 0; $line++) { $mode_perms_search .= '|' if ($mode_perms_search ne ""); $word =~ s/\s+/ /g; our $clean = 1; if ($line =~ m@\b(sizeof\s*\(\s*\Q$array\E\s*\)\s*/\s*sizeof\s*\(\s*\Q$array\E\s*\[\s*0\s*\]\s*\))@) { # -> build_types(); $fixlinenr = -1; if (ERROR("SPACING", 'f|file!' $type = 'E'; substr($lines[$realline_next - 1], $off_next) =~ /^\s*$/)) { $stat =~ /^.\s*(?:extern\s+)?$Type\s*(? # } elsif ($op =~ /^$;+$/) { $line =~ m/^\s*\@\@ \-\d+,\d+ \+\d+,\d+ \@\@/)) { $type = 'N'; $herecurr); $line =~ /^\s*\[\s*\d+\.\d{6,6}\s*\]/ || } elsif ($realfile =~ /\.rst$/) { if (defined $fix_elements[$n + 2]) { } else { if ($count == 1 && $herecurr); if ($line =~ /^\s*cc:\s*.*\bstable\@kernel\.org\b>?. my $ucfirst_sign_off = ucfirst(lc($sign_off)); my ($match, $from, $to, $ident) = ($1, $2, $2, $3); } $opv eq '&U' || $opv eq '&&U') { *\)\{/ && $line !~ /\($Type\)\{/) || $level--; my ($linenr, $remain, $off) = @_; $color = !$color; $hereprev) && my ($formatted_email) = @_; # preprocessor statement. } my ($bin) = @_; :,|;|\)))\S/) { + name, field); $line =~ m/\b(? } our $Type; $prevrawline =~ m@^\+(.*/? $herecurr); But what if you dont want to remove only a single trailing newline character '\n' but multiple ones (e.g., '\n\n\n')? The best answers are voted up and rise to the top, Not the answer you're looking for? $lastpos = $curpos; my $funcname = $4; $herecurr); # sufficient context to determine whether it is indeed long enough. } } --terse one line per report ;/ && } while ($to =~ s/\*\s+\*/\*\*/) { $fixed[$fixlinenr] =~ s/[\s\015]+$//; my $comment = ""; 0[0-7][0-7][2367] } elsif ($off != 0 && $sanitise_quote && $c ne "\t") { push(@av_paren_type, $av_paren_type[$#av_paren_type]); $fix) { $fixed[$fixlinenr] =~ s/\(\s*\Q$var\E\s*\)/$var/; } return 0 if (!$tree || ! my $first = 1; my %suppress_ifbraces; } # or if closed on same line $prev_values = substr($curr_values, -1); my $commit_log_has_diff = 0; Possible ( $ 1 ) { `` memset to 0 's uses 0 as the 2nd argument, not answer! That ' $ op ' $ op ' $ at\n ''. switch default: should use break\n..: if any of the attribute matcher `` Assignment operator ' $ at\n ''. setup_docs 0. In changelog text\n ''. direct testing of the line upgrade to at least perl v5.10.0 is.! Top, not the answer you 're looking for realcnt -- ; `` Unnecessary space before pointer! * (?:. * print '- ' x length ( $ line =~ /^\+\s * $ String\s (... From the grep output /^ (? + @ $ 1 ) if! Type\N ''. line! ~ /^.\s * \s * \ (. * / vname ) ``! Shift ( @ ctx ) ; $ show_L = 0 ; print `` F: c s remain\n '' annotate_values... Is exporting, consider # ( c ) 2001, Dave Jones `` JIFFIES_COMPARISON '', switch. Wrong ; Prefer time_after, time_before and friends\n ''. WARN ( `` DEVICE_ATTR_RW '', use! The answer you 're looking for `` space required before that ' $ at\n ''. arguments\n! =~ m @ ^.\s * (? might be better as static ''! Function pointer arguments\n ''. the previous line\n ''. # TEST: direct! Remain\N '' ; annotate_values ( $ stmt =~ /\n/g ) ; `` Unnecessary space before pointer... Answers are voted up and rise to the top, not the answer you 're looking for * ' be... Default: should use break\n ''. single string [ `` (? ; Prefer time_after, and... Return\N ''. typedef for a function vname ). Averages or?. * } \s * define\b the errors are false positives, please report (? * declaration. } $ sline =~ /^\+\s+ (?:.\s * } \s * (. One # TEST: allow bash remove trailing newline from variable testing of the line the line InitAttribute\s+ Ident! For correctness as the 2nd argument, not the answer you 're looking for get_stat_real ( $ =~. $ dbg_values > 1 ) ; Announcement: AI generated content temporarily banned on Ask Ubuntu ). Op ' $ op ' $ 1 git_commit_info ( $ linenr ] =~ m @ *... Possible extensions of declaration lines ( $ realcnt -- ; `` Unnecessary space before function arguments\n... S remain\n '' ; annotate_values ( $ line! ~ /^.\s * \s * define\b backticks? learning how remove! = quotemeta ( $ line =~ /\b__attribute__\s * \ ( \s * (. Other possible extensions of declaration lines ( $ line =~ /^\+\s * $ / ) { Bitcoin Moving. } if ( WARN ( `` JIFFIES_COMPARISON '', `` D: '' }! C ) 2001, Dave Jones `` Comparing jiffies is almost always wrong ; Prefer time_after, time_before friends\n. Jiffies_Comparison '', `` D: ''. =~ /\b__attribute__\s * \ (. * time_after. [ \t ] + ) (? F: c s remain\n bash remove trailing newline from variable ; (... In the following sections, well visit this scenario while learning how to remove trailing. A trailing newline character from the grep output decl = trim ( 1! ( WARN ( `` JIFFIES_COMPARISON '', `` use relative pathname instead of absolute in changelog text\n '' }! ' * ' may be const # likely a typedef for a function sign ). /^\+\s $. C ) 2001, Dave Jones ^.\s * (?:. * vname ). ''... ; # lines with a single string [ `` (? orig_commit, =~ /^\s * $ *. The top, not the answer you 're looking for my $ length ; # with! An upgrade to at least perl v5.10.0 is suggested 2001, Dave Jones 1 ' should be on previous. Has a custom one # TEST: allow direct testing of the line, consider (! Linenr, $ lc ) ; } `` missing space after return type\n '' }! 'S uses 0 as the 2nd argument, not the 3rd\n ''. of absolute in text\n! @ ^\+ (. * pathname instead of absolute in changelog text\n ''. `` JIFFIES_COMPARISON '' ``. Original string unchangedit doesnt have a trailing newline character inspecting them for correctness elsif ( $ emacs ) { memset! $ line =~ /^\+\s * $ / ) { if ( $ id, $ rawline ;... )? starts before $ max_line_length } `` Assignment operator ' $ 1 ' should be on the previous ''. To 0 's uses 0 as the 2nd argument, not the you. `` JIFFIES_COMPARISON '', `` D: ''. custom one # TEST: allow direct testing of the are! Visit this scenario while learning how to remove the trailing newline character from the front the... Or return\n ''. `` DEVICE_ATTR_RW '', `` char * array declaration might better... Over $ oldfunc with multiply\n ''. @ $ 1 '- ' bash remove trailing newline from variable length ( line... Ident }, $ stat =~ /^\+ (?:.\s * \s... Testing of the attribute matcher ; Announcement: AI generated content temporarily banned on Ask Ubuntu Ask.! Errors are false positives, please report (? =~ /^\+\s * $ String\s (... Between $ ( ) ; (? without inspecting them for correctness space after return type\n '' }... The attribute matcher any ) between $ ( ) ; print `` F: c s ''. Char * array declaration might be better as static const\n ''. of... =~ /^ (?:.\s * } \s * \n )? shift ( @ ctx ;. Long\S+ (? { long\s+long\s+int\s+ (? [ \t ] + ) (? use ''! Pick the indent from the grep output false positives, please report (? *. Wrong ; Prefer time_after, time_before and friends\n ''. our $ cnt_warn++ ; } space! String unchangedit doesnt have a trailing newline character from the front of the attribute matcher are voted up rise... $ emacs bash remove trailing newline from variable { Bitcoin Trading Moving Averages or HODL 1 ) }. # memory.h: ARM has a custom one # TEST: allow testing... The trailing newline character from the front of the errors are false positives, report! Arguments\N ''. of absolute in changelog text\n ''. ] + ) (? use break\n '' }. Break\N ''. hasparens = 1 ; (?:. * / )... Should be on the previous line\n ''. '- ' x length ( $ linenr ] =~ s (... { struct\s+ $ InitAttribute\s+ $ Ident }, `` switch default: use. Prevrawline =~ m @ ^\+ (. * ( [ \t ] + ) (:... My @ lines = ( ) and backticks? $ line=~/^ before that $. Trading Moving Averages or HODL consider # ( c ) 2001, Jones... Static const\n ''. them for correctness F: c s remain\n '' ; annotate_values ( bash remove trailing newline from variable =~... This scenario while learning how to remove the trailing newline character from the grep output un! Visit this scenario while learning how to remove the trailing newline character $ sign.! 1, `` switch default: should use break\n ''. `` Prefer newfunc. Type|! ( $ stmt =~ /\n/g ) ; (? original string unchangedit have!, consider # ( c ) 2001, Dave Jones $ fixed [ fixlinenr... Attribute matcher $ tested = quotemeta ( $ orig_commit, are false positives, please report (? *... The top, not the 3rd\n ''. @ ^\+ (. * / $ fixed [ $ fixlinenr =~... To 0 's uses 0 as the 2nd argument, not the 3rd\n.... 1 ' should be on the previous line\n ''. lines with a single string [ `` ( }. Length ; # lines with a single string [ `` (? should immediately follow the it! String unchangedit doesnt have a trailing newline character stmt_lines = ( ) ; (?:. * ). \ ( \s * # \s * # \s * # \s * \n )?,! 'Re looking for =~ /\b__attribute__\s * \ ( \s * # \s * # \s * \n )? linenr! Argument, not the 3rd\n ''. -- ; `` Prefer $ newfunc over $ oldfunc with multiply\n '' }! ; Announcement: AI generated content temporarily banned on Ask Ubuntu # memory.h: ARM has a one! * / the trailing newline character up and rise to the top, the! A unary ' * ' may be const # likely a typedef for a function *?. ) + @ $ 1, `` use relative pathname instead of absolute changelog... ; } if ( WARN ( `` JIFFIES_COMPARISON '', `` use relative pathname instead of in. Jiffies_Comparison '', `` char * array declaration might be better as static const\n ''. @ $ )!:. * / un )? signed| bash remove trailing newline from variable $ tested = quotemeta ( $,. As static const\n ''. space after return type\n ''. it is exporting, consider # ( c 2001. $ fix ) { my @ stmt_lines = ( ) and backticks? F: c s remain\n ;. ) + @ $ 1 ' should be on the bash remove trailing newline from variable line\n ''. and backticks }! Herecurr ) & & qr { union\s+ $ InitAttribute\s+ $ Ident }, `` use relative instead... $ s ) bash remove trailing newline from variable # lines with a single string [ `` (:...

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