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Finding where an Edit block ends parsed the whole block again for every
line, copying it into the scratch arena each time: a 10k-line $a block
took minutes and tens of GB. sam_edit.waitsFor says what the block waits
for, and while that is a text block's . line, only such a line is parsed
again (editEnd, shared by Messages and completeEnd), its copy freed. A
10k-line block now takes well under a second and 50 MB of scratch.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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mvzr matches bytes, and only the addr path widened a match to runes, so
,x/./a/|/ on é split it into invalid UTF-8 and ,s/./X/g gave a combining
sequence four X's. Edit's matches now go through the same rune alignment
(and an empty match steps a rune, not a byte). runeStart no longer walks a
stray continuation byte back onto the ASCII before it: an invalid byte is
a place of its own.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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A ctl Edit that missed answered `Edit: no match for regexp "Edit
/nomatch/d"`, quoting the whole program; it now names the address that
missed (`no match for regexp /nomatch/`) and quotes no line after. An s
on an empty dot says `no substitution: dot is empty`. A \\1 is blamed
only once its pattern has matched, as before. tags.md says & is special
in s and not in c, a or i, as in sam.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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exec
Every write was split into lines, so a { group or an a/c/i text block written to ctl or exec became lines of their own: i/.../ and } ran as shell command panes that exited 127. An Edit line now takes the lines after it while its group is open or its text block waits for its . line (sam_edit.needsMore, asking sam's parser), on all three; the root ctl takes Edit at the active pane. s/re/text/N counts as sN/re/text/ does. The docs and the skill show a block written by heredoc or env printf, since bash's printf writes line by line, and take round 5's doc list: get refusing once, the (xN) on a repeated err, limit bounding only a forward search's end, line:col's clamping, and $NINE_MOUNT under 9ns --unix.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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Edit ,x/area_of/{ answered ok and did nothing: the group ran out of text and ran what it had. sam reads on for the }; an Edit has nothing more to read, so it now fails with unmatched `{', in the words sam uses for the other side.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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work is refused
A pattern naming a newline runs over the whole text, where mvzr's ^ is only the text's start: /^def .*\n/ from #0 failed, and Edit ,x/^def .*\n/.../ silently did nothing. A leading ^ is now tried at each line start from the search's own; $ just before \n is dropped, as it changes nothing; any other ^ or $ in such a pattern is refused with why, since mvzr would read it as the text's ends. ^ inside an alternation holds only where a search starts, an mvzr limit, documented.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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one undo step
Over 9P a rename everywhere was a loop of addr and data writes. Edit, from a tag, a pane ctl or exec, parses sam's commands as acme's edit.c does and runs them as ecmd.c does against the text as it was, collecting the changes in order as elog.c logs them and applying them at once: addresses (the addr file's, line:col included), x y g v c a i d s p = m t, u alone, and { }. One undo step; any error, in acme's words, changes nothing, fails a ctl write and is logged. p and = print to the directory's +Errors. Left out, and said: the file commands, the pipes, \1-\9 (mvzr keeps no submatches), and changes out of sequence, which acme applies with a warning.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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