i4!===Z4!JJJ /" /0 "AB !?@ 9: 78 ;< /0 12 .J'1BB" {+gz22  B7||a 4XS\\XXX''0':zZZ 7"AtY6666.gw KKKG mTA A A A3 B8 AtP PPrr6cd|vrd|vrdSdfd|D}dD]!}||vr||vr||vr|d}d|d |d cS"dS) u'Detect tool-call escape-drift artifacts in new_string. Looks for ``\'`` or ``\"`` sequences that are present in both old_string and new_string (i.e. the model copy-pasted them as "context" it intended to preserve) but don't exist in the matched region of the file. That pattern indicates the transport layer inserted spurious shell-style escapes around apostrophes or quotes — writing new_string verbatim would literally insert ``\'`` into source code. Returns an error string if drift is detected, None otherwise. \'\"Nc32K|]\}}||VdSN).0startendrs r z'_detect_escape_drift..s0KKZUCgeCi0KKKKKKr)r;r<r&zNEscape-drift detected: old_string and new_string contain the literal sequence a but the matched region of the file does not. This is almost always a tool-call serialization artifact where an apostrophe or quote got prefixed with a spurious backslash. Re-read the file with read_file and pass old_string/new_string without backslash-escaping z characters.)join)rr6rrmatched_regionssuspectplains` rr1r1ws  J5 #:#:t ggKKKK7KKKKKO!   j W %:%:wo?]?]AJE<(/<< ', <<<    4rcpt|dd}|}|D]\}}|d||z||dz}|S)a Apply replacements at the given positions. Args: content: Original content matches: List of (start, end) positions to replace new_string: Replacement text Returns: Content with replacements applied c|dSNrr@xs rz%_apply_replacements..s 1Q4rT)keyreverseN)sorted)rr6rsorted_matchesresultrBrCs rr2r2sXGFFFN F$<< s*,vcdd|; Mrpatterncg}d} |||}|dkrn-|||t|zf|dz}J|S)zStrategy 1: Exact string match.rTr&)findappendr0)rrTr6rBposs rr'r'sgG Ell7E** "99 S3w<</0111a  Nrcd|dD}d|}|d}d|D}t|||||S)z Strategy 2: Match with line-by-line whitespace trimming. Strips leading/trailing whitespace from each line before matching. c6g|]}|Sr@striprAlines r z*_strategy_line_trimmed..s BBBdTZZ\\BBBr c6g|]}|Sr@r\r^s rr`z*_strategy_line_trimmed..s GGG GGGr)splitrE_find_normalized_matches)rrT pattern_linespattern_normalized content_linescontent_normalized_liness rr(r(s}CBgmmD.A.ABBBM=11MM$''MGGGGG $ 8#  rc~d}||}||}t||}|sgSt|||S)zC Strategy 3: Collapse multiple whitespace to single space. c.tjdd|S)Nz[ \t]+r )resubss r normalizez2_strategy_whitespace_normalized..normalizesvia(((r)r'_map_normalized_positions)rrTrorfcontent_normalizedmatches_in_normalizeds rr)r)sj)))#7++"7++,,>@RSS   %W.@BW X XXrc |d}d|D}d|dD}t||||d|S)z Strategy 4: Ignore indentation differences entirely. Strips all leading whitespace from lines before matching. rac6g|]}|Sr@lstripr^s rr`z2_strategy_indentation_flexible..s FFFdkkmmFFFrc6g|]}|Sr@rur^s rr`z2_strategy_indentation_flexible..s CCCtT[[]]CCCr)rcrdrE)rrTrgcontent_stripped_linesres rr*r*ss MM$''MFF FFFCCw}}T/B/BCCCM # 6=))  rcNd}||}||krgSt||S)zt Strategy 5: Convert escape sequences to actual characters. Handles \n -> newline, \t -> tab, etc. c~|ddddddS)Nz\nraz\t z\r )rrms runescapez-_strategy_escape_normalized..unescapes6yy%%--eT::BB5$OOOr)r')rrTr}pattern_unescapeds rr+r+sG PPP!))G## 7$5 6 66rc |d}|sgS|d|d<t|dkr|d|d<d|}|d}g}t|}t t||z dzD]}||||z}|} | d| d<t| dkr| d| d<d| |kr ? ?11#Aa*<&<$<= "&&(( $Q--// A {  a  )"o3355KO 99[ ! !%5 5 5!:q!&8"8#g,,"" Iw NNIw/ 0 0 0 Nroriginalcg}d}|D]G}||t|}||t|ndz }H|||S)uBuild a list mapping each original character index to its normalized index. Because UNICODE_MAP replacements may expand characters (e.g. em-dash → '--', ellipsis → '...'), the normalised string can be longer than the original. This map lets us convert positions in the normalised string back to the corresponding positions in the original string. Returns a list of length ``len(original) + 1``; entry ``i`` is the normalised index that character ``i`` maps to. rNr&)rXrgetr0)rrSnorm_posrrs r_build_orig_to_norm_mapr=srFH99 ht$$!1CIIIq8 MM( Mr orig_to_norm norm_matchesc,i}t|ddD]\}}||vr|||<g}t|dz }|D]T\}}||vr ||} | } | |kr#|| |kr| dz } | |kr || |k|| | fU|S)zNConvert (start, end) positions in the normalised string to original positions.NrVr&) enumerater0rX) rrnorm_to_orig_startorig_posrresultsorig_len norm_startnorm_end orig_startorig_ends r_map_positions_norm_to_origrRs *,' SbS(9::44( - - -+3 x (%'G<  1$H , / / H / / / ' 3 !!l8&>L J-lLII  *733L &|\ B BBrc t|}t|}|d}t|dkrgS|d}|d}|d}|d}t|} g} t t|| z dzD]Y} || |kr9|| | zdz |kr| | Zg} t| } | dkrdnd}| D]} | dkrd}nfd|| dz| | zdz }d|dd}td ||}||krRST>T:T'UVVN!YY}QrT':;;N(~~NNTTVVJ  " "!:"Aq+='=s7||"" Iw NNIw/ 0 0 0 Nrc `|d}|d}|sgSg}t|}tt||z dzD]}||||z}d}t||D]W\} } t d| | } | dkr|dz }X|t|dzkr ? ?11#Aa*<&<$<= !"!-== + +NFF!$  GGMMOOCd{{%*% !C $6$6$< < .s,IIdCIIMIIIIIIrNc3:K|]}t|dzVdSrrr^s rrDz,_calculate_line_positions..s,EED#d))a-EEEEEErr&)sum)rgrrrrrs rrrsnIImKZK.HIIIIIIEEM)8),DEEEEEIG.    g rrhrfc `|d}t|}g}tt||z dzD]d}d||||z} | |kr._s+VV41aa:ooQooooVVr)r0rXrmin)rrrrorig_idxnorm_idxrnorm_to_orig_endrroriginal_matchesrrrrs @rrprp$s   LHH S]] " "x#j//'A'A H H!5 5 5    ) ) ) MH MHH h 5 ( (Z-AS-H-H    ) ) ) MH#h--''HX,>e,K,KA  h 5 ( (    ) ) ) MHH    ) ) ) MH' S]] " "x#j//'A'A, S]] " "C OO,,,A  S]] " " ' 55..( - - -+3 x (%-"" 2LL H + + ++J7JJVVVV9\+B+BVVVVVJ a<+ + +'1 59HH!X %:;HX&&8H+=+F+F MHX&&8H+=+F+F S3x==-I-I JKKKK rr context_lines max_resultsc|r|sdS|}||rsdS|d}|sd|D}|sdS|d}g}tD]\\}} | } | std|| } | dkr|| |f]|sdS|d|d|} g} t}| D]\}}td||z tt|t|z|z}|f}||vrQ| |d fd t|z D}| || sdSd | S) zFind lines in content most similar to old_string for "did you mean?" feedback. Returns a formatted string showing the closest matching lines with context, or empty string if no useful match is found. r=rc^g|]*}||+Sr@r\)rAls rr`z&find_closest_lines..s-@@@Aaggii@aggii@@@rNg333333?c|d SrKr@rLs rrNz$find_closest_lines..s qter)rOrac3FK|]}|zdzdd|zVdS)r&4dz| Nr@)rAjrgrBs rrDz%find_closest_lines..sY  qy1} = = ==#; = =      rz --- ) splitlinesr]rrrrXsortsetmaxrr0addrEr)rrrr old_linesanchor candidatesscoredrr_strippedrtopparts seen_ranges_line_idxrCrOsnippetrgrBs @@rfind_closest_linesrpsG Wr%%''I&&((M Mrq\   ! !F @@@@@  2AF]++&&4::<<  fh77==?? 3;; MM5!* % % % r KKOOK$$$ + C E%%K   8Ax-/00#m$$hY&?-&OPPcl +   ))     3;''       W r >>%  rerror match_countcv|dkrdS|r|dsdSt||}|sdSd|zS)uReturn a '\n\nDid you mean...' snippet for plain no-match errors. Gated so the hint only fires for actual "old_string not found" failures. Ambiguous-match ("Found N matches"), escape-drift, and identical-strings errors all have ``match_count == 0`` but a "did you mean?" snippet would be misleading — those failed for unrelated reasons. Returns an empty string when there's nothing useful to append. rr=zCould not findz& Did you mean one of these sections? ) startswithr)rrrrhints rformat_no_match_hintrs^ar (()9::r j' 2 2D r 6 ==r)F)rr)!__doc__rktypingrrrrdifflibrrstrrboolintr9r1r2r'r(r)r*r+r,rrr-r.r/rrdrprrr@rrrs< 222222222222######SScs  SS16BQBQCBQSBQcBQ)-BQ:?S(SV-YabeYf@f:gBQBQBQBQJ%#%U38_0E%%(%69%>Fsm%%%%PtE#s(O/DRUZ]6 S 3 4c3h3H    C#$uS#X:O(YSY3Y4cSVhCXYYYY* C # $uSRUXBW     77s7tE#s(O?T7777&''c'd5c?>S''''Tcd3i*s)uS#X' %S/:C#CCU3PS8_@UCCCC>5C5#5$uS#X:O5555p S 3 4c3h;P    NT#YC(+=@EJ3PS8_( c $s) 8 >C>%(>36>;>>>>>>>r