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mruby-bin-mirb: fix indentation when splitting line at dedent keyword

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When splitting a line with Enter, check if the new line starts with
a dedenting keyword (end, else, elsif, when, rescue, ensure, }) and
reduce indentation by one level.

Co-authored-by: Claude <noreply@anthropic.com>
This commit is contained in:
Yukihiro "Matz" Matsumoto
2025-12-15 10:57:34 +09:00
parent fa74186b51
commit 1c07ac4892
1 changed files with 19 additions and 0 deletions
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mrbgems/mruby-bin-mirb/tools/mirb/mirb_editor.c
+19
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@@ -684,6 +684,25 @@ handle_key(mirb_editor *ed, int key, mirb_edit_result *result)
int indent = partial ? calc_indent_level(partial) : 0;
free(partial);
mirb_buffer_newline(&ed->buf);
/* Check if new line starts with dedenting keyword */
mirb_line *new_line = &ed->buf.lines[ed->buf.cursor_line];
const char *content = new_line->data;
if ((strncmp(content, "end", 3) == 0 &&
(content[3] == '\0' || content[3] == ' ' || content[3] == '\t' ||
content[3] == '.' || content[3] == ')')) ||
(strncmp(content, "else", 4) == 0 &&
(content[4] == '\0' || content[4] == ' ' || content[4] == '\t')) ||
(strncmp(content, "elsif", 5) == 0 && content[5] == ' ') ||
(strncmp(content, "when", 4) == 0 && content[4] == ' ') ||
(strncmp(content, "rescue", 6) == 0 &&
(content[6] == '\0' || content[6] == ' ' || content[6] == '\t')) ||
(strncmp(content, "ensure", 6) == 0 &&
(content[6] == '\0' || content[6] == ' ' || content[6] == '\t')) ||
content[0] == '}') {
if (indent > 0) indent--;
}
for (int i = 0; i < indent * 2; i++) {
mirb_buffer_insert_char(&ed->buf, ' ');
}