Some files use two spaces for indentation (eg. HTML), while others use four (eg. Python). In the middle of editing a file, I always wish I could change the tab width without reopening the file (= loss of history). This patch achieves our goal!
For example, bind M-4 to settabsize in your rcfile:
bind M-4 settabsize mainthen you can change tabsize on the fly!
Please refer to README.GIT for more details.
-
Install the dependencies:
apt install autoconf automake autopoint gcc gettext git groff make pkg-config texinfo libncurses5-dev -
Run
./autogen.sh. -
After that, just do the normal
./configure,makeandmake install.
From 9c8893604886abbfaefa15229c91308d067390a9 Mon Sep 17 00:00:00 2001
From: davidhcefx <davidhu0903ex3@gmail.com>
Date: Mon, 27 May 2024 15:33:20 +0800
Subject: [PATCH] Feature: change tabsize dynamically
---
doc/nanorc.5 | 3 +++
src/global.c | 4 ++++
src/prototypes.h | 1 +
src/rcfile.c | 2 ++
src/text.c | 22 ++++++++++++++++++++++
5 files changed, 32 insertions(+)
diff --git a/doc/nanorc.5 b/doc/nanorc.5
index ad712e30..c0b77135 100644
--- a/doc/nanorc.5
+++ b/doc/nanorc.5
@@ -693,6 +693,9 @@ the line, column, and character positions.
Counts and reports on the status bar the number of lines, words,
and characters in the current buffer (or in the marked region).
.TP
+.B settabsize
+Prompts for a new tabsize to be set.
+.TP
.B execute
Prompts for a program to execute. The program's output will be inserted
into the current buffer (or into a new buffer when \fBM\-F\fR is toggled).
diff --git a/src/global.c b/src/global.c
index 0a32f139..4521f78c 100644
--- a/src/global.c
+++ b/src/global.c
@@ -623,6 +623,7 @@ void shortcut_init(void)
const char *wordcount_gist =
N_("Count the number of lines, words, and characters");
const char *suspend_gist = N_("Suspend the editor (return to the shell)");
+ const char *settabsize_gist = N_("Set new tabsize");
#endif
const char *refresh_gist = N_("Refresh (redraw) the current screen");
#ifdef ENABLE_WORDCOMPLETION
@@ -978,6 +979,8 @@ void shortcut_init(void)
#ifndef NANO_TINY
add_to_funcs(count_lines_words_and_characters, MMAIN,
N_("Word Count"), WITHORSANS(wordcount_gist), TOGETHER, VIEW);
+ add_to_funcs(do_set_tabsize, MMAIN,
+ N_("Set Tabsize"), WITHORSANS(settabsize_gist), TOGETHER, NOVIEW);
#endif
add_to_funcs(do_verbatim_input, MMAIN,
@@ -1355,6 +1358,7 @@ void shortcut_init(void)
add_to_sclist(MEXECUTE, "^Z", 0, do_suspend, 0);
add_to_sclist(MMAIN, "^Z", 0, suggest_ctrlT_ctrlZ, 0);
add_to_sclist(MMAIN, "M-D", 0, count_lines_words_and_characters, 0);
+ add_to_sclist(MMAIN, "M-4", 0, do_set_tabsize, 0);
#else
add_to_sclist(MMAIN, "M-H", 0, do_help, 0);
#endif
diff --git a/src/prototypes.h b/src/prototypes.h
index cf79680e..eb6de305 100644
--- a/src/prototypes.h
+++ b/src/prototypes.h
@@ -519,6 +519,7 @@ void do_formatter(void);
#endif
#ifndef NANO_TINY
void count_lines_words_and_characters(void);
+void do_set_tabsize(void);
#endif
void do_verbatim_input(void);
void complete_a_word(void);
diff --git a/src/rcfile.c b/src/rcfile.c
index 049a2886..222bc5af 100644
--- a/src/rcfile.c
+++ b/src/rcfile.c
@@ -321,6 +321,8 @@ keystruct *strtosc(const char *input)
s->func = do_find_bracket;
else if (!strcmp(input, "wordcount"))
s->func = count_lines_words_and_characters;
+ else if (!strcmp(input, "settabsize"))
+ s->func = do_set_tabsize;
else if (!strcmp(input, "recordmacro"))
s->func = record_macro;
else if (!strcmp(input, "runmacro"))
diff --git a/src/text.c b/src/text.c
index 85d1bd40..79512d45 100644
--- a/src/text.c
+++ b/src/text.c
@@ -2969,6 +2969,28 @@ void count_lines_words_and_characters(void)
words, P_("word", "words", words),
chars, P_("character", "characters", chars));
}
+
+/* Prompt user to set the new tabsize. We use the spell menu because
+ * it has no functions. */
+void do_set_tabsize(void)
+{
+ ssize_t new_tabsize = -1;
+ int response = do_prompt(MSPELL, "", NULL, edit_refresh, "New tabsize");
+
+ /* Cancel if no answer provided. */
+ if (response != 0) {
+ statusbar(_("Cancelled"));
+ return;
+ }
+
+ if (!parse_num(answer, &new_tabsize) || new_tabsize <= 0) {
+ statusline(AHEM, _("Requested tab size \"%s\" is invalid"), answer);
+ return;
+ }
+
+ tabsize = new_tabsize;
+ statusline(REMARK, _("Tabsize set to %d"), tabsize);
+}
#endif /* !NANO_TINY */
/* Get verbatim input. */
--
2.30.2