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| -rw-r--r-- | txr.1 | 23 |
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@@ -41600,6 +41600,16 @@ the exception. .SS* Editing +The following sections describe the interactive editing commands +available in the listener. + +Terminals can often be configured with different choices of cursor +shape: such as a block-shaped cursor, an underline cursor or a +vertical line or "I-beam" cursor. In the following sections, the +phrase "character under the cursor" refers to the character that is +currently covered by a block cursor, underlined by an underline cursor, +or that is immediately to the right of an I-beam cursor. + .NP* Move Left and Right Moving within the line is achieved using the left and right arrow keys. In @@ -42013,6 +42023,19 @@ the mode. Tab completion, history navigation, history search and editing in an external editor all cancel visual selection mode. +Note: the semantics of visual mode selection in the \*(TX listener differs from +that of some text editors. In some text editors, a visual selection always +includes the "character under the cursor", and thus is never empty. +This works intuitively with block or underline cursors. +The \*(TX selection semantics pairs excellently with the terminal +cursor shape being configured to a vertical line or "I-beam" which appears +between the characters. The selection then simply spans the region +between the original I-beam position and the current I-beam position. +When these positions coincide, the selection is empty. If an I-beam style +cursor is configured, there is no apparent "character under the cursor". +Editing concepts that involve the "character under the cursor" pair best with +an underline or block cursor. + .NP* Selection Endpoint Toggle In visual selection, the starting point of the selection remains fixed, while |