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In the mid-1950s, when assembly language programming was the main way to program a computer, macro instruction features were developed to reduce source code (by generating multiple assembly statements from each macro instruction) and to enforce coding conventions (e.g. specifying input/output commands in standard ways). [31]
A general-purpose macro processor or general purpose preprocessor is a macro processor that is not tied to or integrated with a particular language or piece of software.. A macro processor is a program that copies a stream of text from one place to another, making a systematic set of replacements as it does so.
Calling the `divert' macro with an invalid queue causes text to be discarded until another call. Note that even while output is being discarded, quotes around `divert' and other macros are needed to prevent expansion. # Macros aren't expanded within comments, meaning that keywords such # as divert and other built-ins may be used without ...
Arbitrary programs (called "macros") for searching and modifying text give it great power. Unlike regular expressions, however, the language was imperative, though some versions had an "or" operator in string search. TECO does not really have syntax; each character in a program is an imperative command, dispatched to its corresponding routine ...
Emacs provides commands to manipulate and differentially display semantic units of text such as words, sentences, paragraphs and source code constructs such as functions. It also features keyboard macros for performing user-defined batches of editing commands. GNU Emacs is a real-time display editor, as its edits are displayed onscreen as they ...
ML/1 (Macro Language/One) is a powerful general-purpose macro processor. [1] Typical uses of ML/1 include: editing, modifying, correcting, or reformatting text files; translating source code from one programming language to another; acting as a source-code preprocessor to allow the user to add new syntactic forms to an existing programming language
Despite his desire to keep the program stable, Knuth realized that 128 different characters for the text input were not enough to accommodate foreign languages; the main change in version 3.0 of TeX is thus the ability to work with 8-bit inputs, allowing 256 different characters in the text input. TeX3.0 was released on March 15, 1990.
A number of text editors support macros written either using a macro language built into the editor, e.g., The SemWare Editor (TSE), vi improved (VIM), or using an external implementation, e.g., XEDIT, or both, e.g., KEDIT. Sometimes text editors and edit macros are used under the covers to provide other applications, e.g., FILELIST and RDRLIST ...