Entering ISO-Latin-1 characters in Thot

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ISO-Latin-1 input support in Thot Editor

This document provides the complete list of keyboard input sequences allowing to enter all ISO-Latin-1 characters with a standard (e.g. North American) keyboard. These sequences were extracted from the X-Windows 11 rel 6 file describing the compose sequences for locale support of iso8859-1 standard, and therefore are expected to follow the appropriate standard (available in the file /usr/X11R6/lib/X11/locale/iso8859-1/Compose).

These input sequences are based on a three key sequence beginning with a modifier, the Alt key or the compose key depending on the keyboard type. For example, to obtain a `å' first press the Compose or Alt key, then type `a' and `*'. This principle also applies to capital letters: `È' is obtained by pressing Alt, then `e' with Shift pressed down, and the backquote key.

Notes :

• with Western European keyboards (like the French one) the keys commonly used for such sequences (like backquote, tilda, @ and backslash) are themselve obtained using the AltGr key plus another key, but these should work fine. `È' can be obtained on a French keyboard by entering the sequence <Alt>, <Shift> + `E', <AltGr> + `è', since backquote is mapped on <AltGr> `è'.
• When non-ascii characters are already mapped on the keyboard, this mapping should work fine with Thot Editor.
• The oelig (o and e ligature) and OElig (O and E ligature) are not part of the ISO-Latin-1, so Thot Editor cannot display them using the standard fonts. These characters are displayed as division sign for oelig and multiply sign for OElig.

Rules for ISO-Latin-1 input

Most of the input sequences are based on the following rules:

• the grave accent on a character is obtained by composing the character with a quote: á is obtained with <Alt> a and quote.
• the acute accent on a character is obtained by composing the character with a backquote: à is obtained with <Alt> a and backquote.
• the ring accent on a character is obtained by composing the character with a star: å is obtained with <Alt> a and star.
• the tilde accent on a character is obtained by composing the character with a tilda: ã is obtained with <Alt> a and tilda.
• the circumflex accent on a character is obtained by composing the character with a circumflex: â is obtained with <Alt> a and circumflex.
• the cedilla on a character is obtained by composing the character with a comma: ç is obtained with <Alt> c and comma.
• the umlaut on a character is obtained by composing the character with double quote: ä is obtained with <Alt> a and double quote.
• slashed characters are obtained by composing them with a slash: ø is obtained with <Alt> o and slash.
• ligatures are obtained by composing the first letter with the second one: æ is obtained with <Alt> a and e.

ISO-Latin-1 sequences table