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diff --git a/runtime/tutor b/runtime/tutor index a781b5fe..5892be85 100644 --- a/runtime/tutor +++ b/runtime/tutor @@ -1187,5 +1187,159 @@ multiple cursors, they won't be uncommented but commented again. ================================================================= += 12.1 USING MATCH MODE JUMP = +================================================================= + +To switch to match mode from normal mode, type m. This feature +is particularly useful for handling bracket pairs and their +contents. + +There are several actions that can be performed in match mode, +as indicated by the help pop-up. To jump to a matching bracket pair, +simply press mm. For example on the lines below (starting with +-->), move the cursor in normal mode to (, and then press mm to jump +to the matching ). You can do the same on the line below: for example +move to ], and press mm to jump to [ . + +--> you can (jump between matching parenthesis) +--> or between matching [ square brackets ] +--> now { you know the drill: this works with brackets too } + + + + +================================================================= += 12.2 USING MATCH MODE SELECT INSIDE = +================================================================= + +Match mode also lets you select the "inside" content between a +pair of brackets or other delimiters. In the lines below: + +- move to the --> line, put your cursor in normal mode at any +location between the parenthesis, for example at 'x', and press +mi( or mi) to select the whole content inside the parenthesis +(parenthesis excluded). As usual, you can then do anything you want +with the selection (for example, press c to change it) + +--> outside and (inside x parenthesis) - and outside again + +Test below that you can do the same with [], or {}, or with +nested combinations of these (this will act on the immediately +surrounding matching pair). This also works with "" and similar + +--> test [ with square brackets ] ! +--> try ( with nested [ pairs of ( parenthesis) and "brackets" ]) + +================================================================= += 12.3 USING MATCH MODE SELECT AROUND = +================================================================= + +You can also select the "around" content, i.e. both the inside +content and the delimiters themselves, by using the ma select. +For example, move to the line under, move your cursor in normal +mode to any position between the (), and select the content of +the (), including the surrounding (), by typing ma( or ma). As +usual, you can do anything you want with the selection, for +example delete it all with ma(d . + +--> you ( select x around ) to include delimiters in the select + +This naturally works with other delimiters too: + +--> try [ with 'square' brackets ] too! + + + + + +================================================================= += 12.4 USING MATCH MODE SURROUND = +================================================================= + +The match mode can also be used to add surrounding around the +current selection. For example, move to the line below, then: + * i) select the "select all of this" line segment (for example, +move in normal mode the cursor to the start of select, then enter +selection mode with v , then select the 4 next words with 4e ), + * ii) press ms( or ms) to surround the selection with a pair of +parenthesis. + +--> so, select all of this, and surround it with () + +You can do the same with other delimiters: for example, ms' on +WORD below to surround it with a pair of ''. You can try also +with adding a surrounding pair of "", or {}, or []. + +--> surround this WORD ! + + + +================================================================= += 12.5 USING MATCH MODE DELETE SURROUND = +================================================================= + +You can delete surrounding pair of delimiters with the md +command. On the line below, move the cursor anywhere +within the pair of (), for example to the 'x', then from there, +in normal mode, press md( or md) to delete the surrounding +pair of parenthesis. + +--> delete (the x pair of parenthesis) from within! + +You can naturally delete other kinds of surroundings: + +--> delete (nested [delimiters]): "this" will delete the nearest +matching surrounding pair. +--> delete "layers "of" quote marks" too: this will delete the +nearest previous and following quote marks + +Trying to delete unexisting surrounding delimiters print an error +at the bottom bar and does nothing. + +================================================================= += 12.6 USING MATCH MODE REPLACE SURROUND = +================================================================= + +You can replace surrounding pairs of delimiters with the mr +command. On the line below, move the cursor to +anywhere within the pair of (), for example on the 'x', then in +normal mode, press mr([ to replace the pair of () with a pair +of []. + +--> replace the (pair from x within), with something else + +This command will act on the closest enclosing pair, so you +can try replacing different surrounding in the following: + +--> some (nested surroundings [can be replaced]) +--> this "works with 'other surroundings' too" + +You can try to replace a non existing pair: this will show +an error warning at the bottom bar and do nothing. + + +================================================================= += CHAPTER 12 RECAP = +================================================================= + +You can enter the match mode with the m key; this will show the +actions available in a popup. This will allow you to: + * jump to matching pair of delimiters with mm (you must have a + delimiter belonging to a pair under your cursor) + * select inside a pair of delimiters surrounding your cursor + (i.e. select the content but not the delimiters) with mi( + and similar + * select around a pair of delimiters surrounding your cursor + (i.e. select the content and the delimiters) with ma( and + similar + * delete surrounding delimiters with md( and similar + * add surrounding delimiters around the selection with ms( + * replace a pair of delimiters surrounding your selection with + mr([ to replace for example surrounding () with [] + + + + +================================================================= This tutorial is still a work-in-progress. More sections are planned. |