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line-level text tool が重要な理由

list は copy-paste chaos peak。Word bullet→plain line；meeting note same action×3；server log thousands row errors only；CSV blank row import break；PDF paragraph one long or fifty short neither editor fit。

WriteWithin Line Tools structure：blank/duplicate/sort/filter/join/split/reflow。browser no upload。intra-line spacing も Whitespace Cleaner pair。

Line Tools の機能

Blank vs whitespace-only blank

truly blank no character。whitespace-only looks empty spaces/tabs HTML paste sloppy CSV。Treat whitespace-only as blank both。Remove blank drops；collapse empty run without every gap delete Whitespace collapse blank line intra-line workflow。

Stable unique line

Unique lines keep first duplicate remove first appearance order preserve。sort-then-unique scramble unlike stable dedupe «Alice» before «Bob» paste order。email list/tag cloud/SKU export/chat action-item fastest clean before share。

Filter keep/remove containing

Remove lines containing keyword match row drop browser mini grep。Keep lines containing opposite ERROR log ideal。case sensitive HTTP vs http when matter。empty filter skip。

Sort reverse order

Sort A→Z Z→A alphabetically。Ignore case «Apple»«apple» group。Reverse top-bottom without alphabetical chat newest-first chronological read。

Join split reflow

Join separator space/comma/semicolon/custom merge every row。Remove line breaks flatten space prose cleanup。Split sentence/fixed width/custom delimiter。Reflow wrap width Prose preset 72 char email readable。

処理順 fixed pipeline

1. Normalize line endings internal
2. Remove blank optionally whitespace-only blank
3. Filter keep/remove keyword
4. Deduplicate stable first-seen
5. Sort or reverse
6. Join remove break split soft wrap
7. Restore line-ending preserve/LF/CRLF

filter before dedupe ERROR only then duplicate among one pass。

common job Preset

• Email paste — blank whitespace-only remove
• List cleanup — dedupe sort A→Z ignore case LF
• CSV prep — dedupe no sort LF
• Prose reflow — join hard break wrap 72
• Log filter — remove blank keep containing keyword case insensitive

Line Tools vs Whitespace Cleaner Line Counter

Whitespace Cleaner inside line spacing double NBSP zero-width PDF join tab conversion。blank collapse/remove can dedupe/sort/filter/reflow width not。both broken Whitespace first Line Tools second。

Line Counter measure no change poetry README homework after Line Tools shape。「how much?» vs «what order shape?»

character-level emoji smart quote accent Character Cleaner。sort name after casing Case Converter。

step-by-step dedupe sort contact list

1. list Line Tools input paste
2. Treat whitespace-only blank Remove blank enable
3. Unique lines keep first
4. Sort A→Z Ignore case
5. output copy spreadsheet mail-merge

step-by-step filter log

1. Log preset or manual Remove blank Treat whitespace-only blank
2. Keep lines containing ERROR/token
3. case sensitivity off unless mixed-case log level
4. Unique lines optionally same error thousands
5. filtered rows ticket summary email copy

common mistake

• Deduplicate before filter — pipeline filter first manual twice also filter before dedupe
• Sort when order matters — stable unique no sort timeline priority
• Space collapse expect here — double space inside line Whitespace
• Join CSV comma blindly — field comma spreadsheet fix joins whole line not column
• Line Counter clean — never modify process first measure

browser line processing benefit

• Full suite sort filter join dedupe one place
• Stable unique first-seen unlike many online dedupe
• Whitespace-only blank detection
• Private email client name internal SKU never leave device
• Composable WriteWithin utility seconds

real-world use case

Newsletter chat list: dedupe before translate/mail same reminder twice not。Inventory SKU: sort remove blank Line Counter verify。PDF paragraph: Remove line breaks join reflow or Whitespace PDF preset mid-sentence join first。Developer snippet: reverse stack trace filter package dedupe warning。

common question

Blank vs whitespace-only? Blank no char whitespace-only spaces/tabs Treat whitespace-only as blank both remove。

Unique lines original order? Yes first stays later drop。

Text uploaded? No browser entirely。

Count after processing? Line Counter output limit confirm。

Space before/after line work? intra-line messy Whitespace first structure Line Tools second。