#!/bin/sh -e
# Generated by patch2vi from unified diff
# Available separators: 0003-0010 0013-0014 0016-0037 0102-0104 0110 0112 0115 0120-0121 0123 0126 0130-0132 0176-0377

# Pass any argument to use patch(1) instead of nextvi ex commands
if [ -n "$1" ]; then
    sed '1,/^=== PATCH2VI PATCH ===$/d' "$0" | patch -p1 --merge=diff3
    exit $?
fi

VI=${VI:-vi}
if ! $VI -? 2>&1 | grep -q 'Nextvi'; then
    echo "Error: $VI is not nextvi" >&2
    echo "Set VI environment variable to point to nextvi binary" >&2
    exit 1
fi

SEP="$(printf '\001')"
ESC="$(printf '\002')"
# Command that handles readability line breaks
LB="0?"
# Phase 1 (search/mark): errors disabled by default,
# DBG1=1 enables error reporting, QF1=1 quits on failure
# OK1: with DBG1=1 also report fallback anchor successes
[ "$DBG1" = "1" ] && OK1= || OK1="0?"
[ "$DBG1" = "1" ] && DBG1= || DBG1="0?"
[ "$QF1" = "1" ] && QF1="${ESC}${SEP}vis 2${ESC}${SEP}q!1" || QF1=
# Phase 2 (edits): DBG2=1 disables errors, QF2=1 ignores them
# OK2: with DBG2= also report fallback substitute successes
[ "$DBG2" = "1" ] && OK2="0?" || OK2=
[ "$DBG2" = "1" ] && DBG2="0?" || DBG2=
[ "$QF2" = "1" ] && QF2= || QF2="${ESC}${SEP}vis 2${ESC}${SEP}q!1"
# Enters vi at failing code line in this script
# Designed for state inspection mid execution
[ "$INTR" = "1" ] && INTR="${ESC}${SEP}|sc|${ESC}${SEP}vis 2:fr 0:e $0:83reg %@47:%f> %@112:&Q:b0:|sc! ${ESC}${ESC}${ESC}${SEP}|:vis 3${ESC}${SEP}q1" || INTR=

# Patch: ex.c
# Body too large for EXINIT/argv: stage it in a file
( : > /tmp/p2vi.$$ ) 2>/dev/null && P2VIF=/tmp/p2vi.$$ || P2VIF=./p2vi.$$
trap 'rm -f "$P2VIF"' EXIT
printf '%s\n' "|sc! ${ESC}${SEP}|:vis 3${SEP}fr 98${SEP}b0${SEP}%ya 98${SEP}?${ESC}${SEP}${LB}
${ESC}${SEP}%f> 			fd < 0 \\|\\| rd \\? 'f' : 'r'\\);
	if \\(!\\(xvis & 4\\)\\)
		ex_print\\(msg, bar_ft\\)
	return \\(fd < 0 \\|\\| rd\\) && \\*arg \\? xuerr : NULL;
}

${ESC}${SEP}1??${ESC}${SEP}${LB}
${ESC}${SEP}1??+2m 1${ESC}${ESC}${ESC}${SEP}1q${ESC}${SEP}${LB}
${ESC}${SEP}%f> 			fd < 0 \\|\\| rd \\? 'f' : 'r'\\);
	if \\(!\\(xvis & 4\\)\\)
		ex_print\\(msg, bar_ft\\)${ESC}${SEP}3??${ESC}${SEP}${LB}
${ESC}${SEP}3??+2m 1${ESC}${ESC}${ESC}${SEP}${OK1}p OK ex.c:439:a3${ESC}${ESC}${ESC}${SEP}1q${ESC}${SEP}${LB}
${ESC}${SEP}grp 1${ESC}${SEP}%f> 			fd < 0 \\|\\| rd \\? 'f' : 'r'\\);.*?
	if \\(!\\(xvis & 4\\)\\).*?
(		ex_print\\(msg, bar_ft\\))${ESC}${SEP}7??${ESC}${SEP}${LB}
${ESC}${SEP}grp 0${ESC}${SEP}7??m 1${ESC}${ESC}${ESC}${SEP}${OK1}p OK ex.c:439:a7${ESC}${ESC}${ESC}${SEP}1q${ESC}${SEP}${LB}
${ESC}${SEP}m 0${ESC}${SEP}1;0${ESC}${SEP}grp 1${ESC}${SEP}%f> 	}
	snprintf\\(msg, sizeof\\(msg\\), \"\\\\\"%s\\\\\" %dL \\[%c]\",
			\\*xb_path \\? xb_path : \"unnamed\", lbuf_len\\(xb\\),.*(static void \\*ec_fuzz\\(char \\*loc, char \\*cmd, char \\*arg\\))
\\{
	rset \\*rs;${ESC}${SEP}8??${ESC}${SEP}${LB}
${ESC}${SEP}grp 0${ESC}${SEP}8??-4m 1${ESC}${ESC}${ESC}${SEP}${OK1}p OK ex.c:439:a8${ESC}${SEP}'0${ESC}${SEP}8??${ESC}${ESC}${ESC}${SEP}1q${ESC}${SEP}${LB}
${ESC}${SEP}m 0${ESC}${SEP}1;0${ESC}${SEP}grp 1${ESC}${SEP}%f> 	if \\(cd == 3 \\|\\| \\(!rd && fd >= 0\\)\\) \\{
		ex_bufpostfix\\(ex_buf, arg\\[0]\\);
		syn_setft\\(xb_ft\\);.*(	char \\*path, \\*p, buf\\[128], trunc\\[128], \\*sret = NULL;)
	int c, pos, subs\\[2], inst = -1, lnum = -1;
	int beg, end, max = INT_MAX, dwid1, dwid2;${ESC}${SEP}9??${ESC}${SEP}${LB}
${ESC}${SEP}grp 0${ESC}${SEP}9??-7m 1${ESC}${ESC}${ESC}${SEP}${OK1}p OK ex.c:439:a9${ESC}${SEP}'0${SEP}${LB}
${SEP}1;3;7;8;9??!${DBG1:-ya!112${ESC}${SEP}prp${ESC}${SEP}p FAIL ex.c:439${ESC}${SEP}pr${INTR}${QF1}}${SEP}${LB}
${SEP}${LB}
${SEP}'1i 	if (!rd && fd >= 0 && lbuf_len(xb) > 0) {
		int adv = 0;
		while (lbuf_len(xb) > adv+1 && xb->ln[adv][0] == '\\n')
			adv++;
		struct filetype lfts[] = {
			{FT(sh), \"^#!.*/(env[ \\t]*)?(sh|bash|zsh|dash)([ \\t]*.*)?\$\"},
			{FT(py), \"^#!.*/(env[ \\t]*)?python3?([ \\t]*.*)?\$\"}
		};
		char *pats[LEN(lfts)];
		for (int i = 0; i < LEN(lfts); i++)
			pats[i] = lfts[i].pat;
		rset *rs = rset_make(LEN(lfts), pats, 0);
		int hl = rset_find(rs, xb->ln[adv], NULL, REG_NEWLINE);
		if (hl >= 0)
			xb_ft = syn_setft(lfts[hl].ft);
		rset_free(rs);
	}
${SEP}??!${DBG2:-ya!112${ESC}${SEP}prp${ESC}${SEP}p FAIL ex.c:439:m1${ESC}${SEP}pr${INTR}${QF2}}${SEP}vis 2${SEP}b0${SEP}w${SEP}2q" > "$P2VIF"
EXINIT='%ya 97:? %@97' $VI -e 'ex.c' "$P2VIF"

exit 0
=== PATCH2VI DELTA ===
=== PATCH2VI PATCH ===
diff --git a/ex.c b/ex.c
index 67e5e1a6..557dd0e0 100644
--- a/ex.c
+++ b/ex.c
@@ -437,6 +437,23 @@ static void *ec_edit(char *loc, char *cmd, char *arg)
 			fd < 0 || rd ? 'f' : 'r');
 	if (!(xvis & 4))
 		ex_print(msg, bar_ft)
+	if (!rd && fd >= 0 && lbuf_len(xb) > 0) {
+		int adv = 0;
+		while (lbuf_len(xb) > adv+1 && xb->ln[adv][0] == '\n')
+			adv++;
+		struct filetype lfts[] = {
+			{FT(sh), "^#!.*/(env[ \t]*)?(sh|bash|zsh|dash)([ \t]*.*)?$"},
+			{FT(py), "^#!.*/(env[ \t]*)?python3?([ \t]*.*)?$"}
+		};
+		char *pats[LEN(lfts)];
+		for (int i = 0; i < LEN(lfts); i++)
+			pats[i] = lfts[i].pat;
+		rset *rs = rset_make(LEN(lfts), pats, 0);
+		int hl = rset_find(rs, xb->ln[adv], NULL, REG_NEWLINE);
+		if (hl >= 0)
+			xb_ft = syn_setft(lfts[hl].ft);
+		rset_free(rs);
+	}
 	return (fd < 0 || rd) && *arg ? xuerr : NULL;
 }