first commit

.gitignore

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+config.h
+**/*.swp
+**/*~
+**/*.o
+**/*.core
+**/*.pem
+vgcore*
+se

LICENSE

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+Copyright (c) 2025, Lorenzo Torres
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+1. Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+3. Neither the name of the <organization> nor the
+   names of its contributors may be used to endorse or promote products
+   derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY <COPYRIGHT HOLDER> ''AS IS'' AND ANY
+EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Makefile

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+# se - simple editor
+# See LICENSE file for copyright and license details.
+
+include config.mk
+
+SRC = se.c
+HDR = config.def.h se.h
+OBJ = ${SRC:.c=.o}
+
+all: options se
+
+options:
+	@echo se build options:
+	@echo "CFLAGS   = ${CFLAGS}"
+	@echo "LDFLAGS  = ${LDFLAGS}"
+	@echo "CC       = ${CC}"
+
+.c.o:
+	${CC} -c ${CFLAGS} $<
+
+${OBJ}: config.h config.mk
+
+config.h:
+	cp config.def.h $@
+
+se: ${OBJ}
+	${CC} -o $@ ${OBJ} ${LDFLAGS}
+
+clean:
+	rm -f se ${OBJ} se-${VERSION}.tar.gz
+
+dist: clean
+	mkdir -p se-${VERSION}
+	cp -R LICENSE Makefile README config.mk\
+		se.1 ${HDR} ${SRC} se-${VERSION}
+	tar -cf se-${VERSION}.tar se-${VERSION}
+	gzip se-${VERSION}.tar
+	rm -rf se-${VERSION}
+
+install: all
+	mkdir -p ${DESTDIR}${PREFIX}/bin
+	cp -f se ${DESTDIR}${PREFIX}/bin
+	chmod 755 ${DESTDIR}${PREFIX}/bin/se
+	mkdir -p ${DESTDIR}${MANPREFIX}/man1
+	sed "s/VERSION/${VERSION}/g" < se.1 > ${DESTDIR}${MANPREFIX}/man1/se.1
+	chmod 644 ${DESTDIR}${MANPREFIX}/man1/se.1
+
+uninstall:
+	rm -f ${DESTDIR}${PREFIX}/bin/se\
+		${DESTDIR}${MANPREFIX}/man1/se.1
+
+.PHONY: all options clean dist install uninstall

README

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+se - simple editor
+============================
+TODO: description
+
+
+Requirements
+------------
+The only requirement is a posix compliant system with a C99
+compiler and make.
+
+
+Installation
+------------
+Edit config.mk to match your local setup (se is installed into
+/usr/local by default).
+
+Afterwards enter the following command to build and install se (if
+necessary as root):
+
+    make clean install
+
+
+Configuration
+-------------
+The configuration of se is done by creating a custom config.h
+and (re)compiling the source code.

config.def.h

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+/* See LICENSE file for copyright and license details. */
+

config.mk

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+# se version
+VERSION = 0.1
+
+# Customize below to fit your system
+
+# paths
+PREFIX = /usr
+MANPREFIX = ${PREFIX}/share/man
+
+# OpenBSD (uncomment)
+#MANPREFIX = ${PREFIX}/man
+
+# includes and libs
+INCS = -I.
+LIBS =
+# flags
+CFLAGS  := -std=c99 -pedantic -Wall -O0 ${INCS} -DVERSION=\"${VERSION}\" 
+CFLAGS  := ${CFLAGS} -g
+LDFLAGS  = ${LIBS}
+
+# compiler
+CC = cc

se.c

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+#include <se.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <stddef.h>
+#include <stdlib.h>
+
+struct pt_piece {
+    size_t start, length;
+    struct pt_piece *next;
+    struct pt_piece *prev;
+    uint8_t original;
+};
+
+struct pt_piece *pt_create_piece(size_t start, size_t length, uint8_t original)
+{
+    struct pt_piece *piece = (struct pt_piece *) malloc(sizeof(struct pt_piece));
+    piece->start = start;
+    piece->length = length;
+    piece->next = NULL;
+    piece->prev = NULL;
+    piece->original = original;
+}
+
+int main(void)
+{
+    printf("Hello world!\n");
+
+	return 0;
+}